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| author | Andrey Andreev <narf@devilix.net> | 2019-09-19 14:08:45 +0200 |
|---|---|---|
| committer | Andrey Andreev <narf@devilix.net> | 2019-09-19 14:08:45 +0200 |
| commit | b73eb19aed66190c10c9cad476da7c36c271d6dc (patch) | |
| tree | b3d5d4f960569c30701934416d6d51628bde81a7 /user_guide/libraries/input.html | |
| parent | 6e052d80b95b9332ed592cdc3431b5f9dc8dd250 (diff) | |
[ci skip] 3.1.11 release
Diffstat (limited to 'user_guide/libraries/input.html')
| -rw-r--r-- | user_guide/libraries/input.html | 1191 |
1 files changed, 1191 insertions, 0 deletions
diff --git a/user_guide/libraries/input.html b/user_guide/libraries/input.html new file mode 100644 index 000000000..3463c949a --- /dev/null +++ b/user_guide/libraries/input.html @@ -0,0 +1,1191 @@ + + +<!DOCTYPE html> +<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]--> +<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]--> +<head> + <meta charset="utf-8"> + <meta name="viewport" content="width=device-width, initial-scale=1.0"> + + <title>Input Class — CodeIgniter 3.1.11 documentation</title> + + + + + <link rel="shortcut icon" href="../_static/ci-icon.ico"/> + + + + <link href='https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic|Roboto+Slab:400,700|Inconsolata:400,700&subset=latin,cyrillic' rel='stylesheet' type='text/css'> + + + + + + + + + + <link rel="stylesheet" href="../_static/css/citheme.css" type="text/css" /> + + + + <link rel="index" title="Index" + href="../genindex.html"/> + <link rel="search" title="Search" href="../search.html"/> + <link rel="top" title="CodeIgniter 3.1.11 documentation" href="../index.html"/> + <link rel="up" title="Libraries" href="index.html"/> + <link rel="next" title="Javascript Class" href="javascript.html"/> + <link rel="prev" title="Image Manipulation Class" href="image_lib.html"/> + + + <script src="https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.6.2/modernizr.min.js"></script> + +</head> + +<body class="wy-body-for-nav" role="document"> + + <div id="nav"> + <div id="nav_inner"> + + + + <div id="pulldown-menu" class="ciNav"> + <ul> +<li class="toctree-l1"><a class="reference internal" href="../general/welcome.html">Welcome to CodeIgniter</a></li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../installation/index.html">Installation Instructions</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../installation/downloads.html">Downloading CodeIgniter</a></li> +<li class="toctree-l2"><a class="reference internal" 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href="../general/environments.html">Handling Multiple Environments</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/alternative_php.html">Alternate PHP Syntax for View Files</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/security.html">Security</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/styleguide.html">PHP Style Guide</a></li> +</ul> +</li> +</ul> +<ul class="current"> +<li class="toctree-l1 current"><a class="reference internal" href="index.html">Libraries</a><ul class="current"> +<li class="toctree-l2"><a class="reference internal" href="benchmark.html">Benchmarking Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="caching.html">Caching Driver</a></li> +<li class="toctree-l2"><a class="reference internal" href="calendar.html">Calendaring Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="cart.html">Shopping Cart Class</a></li> +<li 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Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="typography.html">Typography Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="unit_testing.html">Unit Testing Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="uri.html">URI Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="user_agent.html">User Agent Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="xmlrpc.html">XML-RPC and XML-RPC Server Classes</a></li> +<li class="toctree-l2"><a class="reference internal" href="zip.html">Zip Encoding Class</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../database/index.html">Database Reference</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../database/examples.html">Quick Start: Usage Examples</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/configuration.html">Database 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Applications</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/environments.html">Handling Multiple Environments</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/alternative_php.html">Alternate PHP Syntax for View Files</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/security.html">Security</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/styleguide.html">PHP Style Guide</a></li> +</ul> +</li> +</ul> +<ul class="current"> +<li class="toctree-l1 current"><a class="reference internal" href="index.html">Libraries</a><ul class="current"> +<li class="toctree-l2"><a class="reference internal" href="benchmark.html">Benchmarking Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="caching.html">Caching Driver</a></li> +<li class="toctree-l2"><a class="reference internal" href="calendar.html">Calendaring Class</a></li> +<li class="toctree-l2"><a 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class="toctree-l2"><a class="reference internal" href="trackback.html">Trackback Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="typography.html">Typography Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="unit_testing.html">Unit Testing Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="uri.html">URI Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="user_agent.html">User Agent Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="xmlrpc.html">XML-RPC and XML-RPC Server Classes</a></li> +<li class="toctree-l2"><a class="reference internal" href="zip.html">Zip Encoding Class</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../database/index.html">Database Reference</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../database/examples.html">Quick Start: Usage Examples</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/configuration.html">Database Configuration</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/connecting.html">Connecting to a Database</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/queries.html">Running Queries</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/results.html">Generating Query Results</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/helpers.html">Query Helper Functions</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/query_builder.html">Query Builder Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/transactions.html">Transactions</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/metadata.html">Getting MetaData</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/call_function.html">Custom Function Calls</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/caching.html">Query Caching</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/forge.html">Database Manipulation with Database Forge</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/utilities.html">Database Utilities Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="../database/db_driver_reference.html">Database Driver Reference</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../helpers/index.html">Helpers</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../helpers/array_helper.html">Array Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/captcha_helper.html">CAPTCHA Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/cookie_helper.html">Cookie Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/date_helper.html">Date Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/directory_helper.html">Directory Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/download_helper.html">Download Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/email_helper.html">Email Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/file_helper.html">File Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/form_helper.html">Form Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/html_helper.html">HTML Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/inflector_helper.html">Inflector Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/language_helper.html">Language Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/number_helper.html">Number Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/path_helper.html">Path Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/security_helper.html">Security Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/smiley_helper.html">Smiley Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/string_helper.html">String Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/text_helper.html">Text Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/typography_helper.html">Typography Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/url_helper.html">URL Helper</a></li> +<li class="toctree-l2"><a class="reference internal" href="../helpers/xml_helper.html">XML Helper</a></li> +</ul> +</li> +</ul> + + + + </div> + + </nav> + + <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap"> + + + <nav class="wy-nav-top" role="navigation" aria-label="top navigation"> + <i data-toggle="wy-nav-top" class="fa fa-bars"></i> + <a href="../index.html">CodeIgniter</a> + </nav> + + + + <div class="wy-nav-content"> + <div class="rst-content"> + <div role="navigation" aria-label="breadcrumbs navigation"> + <ul class="wy-breadcrumbs"> + <li><a href="../index.html">Docs</a> »</li> + + <li><a href="index.html">Libraries</a> »</li> + + <li>Input Class</li> + <li class="wy-breadcrumbs-aside"> + + </li> + <div style="float:right;margin-left:5px;" id="closeMe"> + <img title="Classic Layout" alt="classic layout" src="data:image/gif;base64,R0lGODlhFAAUAJEAAAAAADMzM////wAAACH5BAUUAAIALAAAAAAUABQAAAImlI+py+0PU5gRBRDM3DxbWoXis42X13USOLauUIqnlsaH/eY6UwAAOw==" /> + </div> + </ul> + <hr/> +</div> + <div role="main" class="document"> + + <div class="section" id="input-class"> +<h1>Input Class<a class="headerlink" href="#input-class" title="Permalink to this headline">¶</a></h1> +<p>The Input Class serves two purposes:</p> +<ol class="arabic simple"> +<li>It pre-processes global input data for security.</li> +<li>It provides some helper methods for fetching input data and pre-processing it.</li> +</ol> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">This class is initialized automatically by the system so there +is no need to do it manually.</p> +</div> +<div class="contents local topic" id="contents"> +<ul class="simple"> +<li><a class="reference internal" href="#input-filtering" id="id1">Input Filtering</a><ul> +<li><a class="reference internal" href="#security-filtering" id="id2">Security Filtering</a></li> +<li><a class="reference internal" href="#xss-filtering" id="id3">XSS Filtering</a></li> +</ul> +</li> +<li><a class="reference internal" href="#accessing-form-data" id="id4">Accessing form data</a><ul> +<li><a class="reference internal" href="#using-post-get-cookie-or-server-data" id="id5">Using POST, GET, COOKIE, or SERVER Data</a></li> +<li><a class="reference internal" href="#using-the-php-input-stream" id="id6">Using the php://input stream</a></li> +</ul> +</li> +<li><a class="reference internal" href="#class-reference" id="id7">Class Reference</a></li> +</ul> +</div> +<div class="custom-index container"></div><div class="section" id="input-filtering"> +<h2><a class="toc-backref" href="#id1">Input Filtering</a><a class="headerlink" href="#input-filtering" title="Permalink to this headline">¶</a></h2> +<div class="section" id="security-filtering"> +<h3><a class="toc-backref" href="#id2">Security Filtering</a><a class="headerlink" href="#security-filtering" title="Permalink to this headline">¶</a></h3> +<p>The security filtering method is called automatically when a new +<a class="reference internal" href="../general/controllers.html"><span class="doc">controller</span></a> is invoked. It does the +following:</p> +<ul class="simple"> +<li>If <code class="docutils literal"><span class="pre">$config['allow_get_array']</span></code> is FALSE (default is TRUE), destroys +the global GET array.</li> +<li>Destroys all global variables in the event register_globals is +turned on.</li> +<li>Filters the GET/POST/COOKIE array keys, permitting only alpha-numeric +(and a few other) characters.</li> +<li>Provides XSS (Cross-site Scripting Hacks) filtering. This can be +enabled globally, or upon request.</li> +<li>Standardizes newline characters to <code class="docutils literal"><span class="pre">PHP_EOL</span></code> (\n in UNIX-based OSes, +\r\n under Windows). This is configurable.</li> +</ul> +</div> +<div class="section" id="xss-filtering"> +<h3><a class="toc-backref" href="#id3">XSS Filtering</a><a class="headerlink" href="#xss-filtering" title="Permalink to this headline">¶</a></h3> +<p>The Input class has the ability to filter input automatically to prevent +cross-site scripting attacks. If you want the filter to run +automatically every time it encounters POST or COOKIE data you can +enable it by opening your <em>application/config/config.php</em> file and setting +this:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$config</span><span class="p">[</span><span class="s1">'global_xss_filtering'</span><span class="p">]</span> <span class="o">=</span> <span class="k">TRUE</span><span class="p">;</span> +</pre></div> +</div> +<p>Please refer to the <a class="reference internal" href="security.html"><span class="doc">Security class</span></a> documentation for +information on using XSS Filtering in your application.</p> +<div class="admonition important"> +<p class="first admonition-title">Important</p> +<p class="last">The ‘global_xss_filtering’ setting is DEPRECATED and kept +solely for backwards-compatibility purposes. XSS escaping should +be performed on <em>output</em>, not <em>input</em>!</p> +</div> +</div> +</div> +<div class="section" id="accessing-form-data"> +<h2><a class="toc-backref" href="#id4">Accessing form data</a><a class="headerlink" href="#accessing-form-data" title="Permalink to this headline">¶</a></h2> +<div class="section" id="using-post-get-cookie-or-server-data"> +<h3><a class="toc-backref" href="#id5">Using POST, GET, COOKIE, or SERVER Data</a><a class="headerlink" href="#using-post-get-cookie-or-server-data" title="Permalink to this headline">¶</a></h3> +<p>CodeIgniter comes with helper methods that let you fetch POST, GET, +COOKIE or SERVER items. The main advantage of using the provided +methods rather than fetching an item directly (<code class="docutils literal"><span class="pre">$_POST['something']</span></code>) +is that the methods will check to see if the item is set and return +NULL if not. This lets you conveniently use data without +having to test whether an item exists first. In other words, normally +you might do something like this:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$something</span> <span class="o">=</span> <span class="nb">isset</span><span class="p">(</span><span class="nv">$_POST</span><span class="p">[</span><span class="s1">'something'</span><span class="p">])</span> <span class="o">?</span> <span class="nv">$_POST</span><span class="p">[</span><span class="s1">'something'</span><span class="p">]</span> <span class="o">:</span> <span class="k">NULL</span><span class="p">;</span> +</pre></div> +</div> +<p>With CodeIgniter’s built in methods you can simply do this:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$something</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">post</span><span class="p">(</span><span class="s1">'something'</span><span class="p">);</span> +</pre></div> +</div> +<p>The main methods are:</p> +<ul class="simple"> +<li><code class="docutils literal"><span class="pre">$this->input->post()</span></code></li> +<li><code class="docutils literal"><span class="pre">$this->input->get()</span></code></li> +<li><code class="docutils literal"><span class="pre">$this->input->cookie()</span></code></li> +<li><code class="docutils literal"><span class="pre">$this->input->server()</span></code></li> +</ul> +</div> +<div class="section" id="using-the-php-input-stream"> +<h3><a class="toc-backref" href="#id6">Using the php://input stream</a><a class="headerlink" href="#using-the-php-input-stream" title="Permalink to this headline">¶</a></h3> +<p>If you want to utilize the PUT, DELETE, PATCH or other exotic request +methods, they can only be accessed via a special input stream, that +can only be read once. This isn’t as easy as just reading from e.g. +the <code class="docutils literal"><span class="pre">$_POST</span></code> array, because it will always exist and you can try +and access multiple variables without caring that you might only have +one shot at all of the POST data.</p> +<p>CodeIgniter will take care of that for you, and you can read the data +from the <strong>php://input</strong> stream at any time, just by using the +<code class="docutils literal"><span class="pre">$raw_input_stream</span></code> property:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">raw_input_stream</span><span class="p">;</span> +</pre></div> +</div> +<p>Additionally if the input stream is form-encoded like $_POST you can +access its values by calling the +<code class="docutils literal"><span class="pre">input_stream()</span></code> method:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">input_stream</span><span class="p">(</span><span class="s1">'key'</span><span class="p">);</span> +</pre></div> +</div> +<p>Similar to other methods such as <code class="docutils literal"><span class="pre">get()</span></code> and <code class="docutils literal"><span class="pre">post()</span></code>, if the +requested data is not found, it will return NULL and you can also +decide whether to run the data through <code class="docutils literal"><span class="pre">xss_clean()</span></code> by passing +a boolean value as the second parameter:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">input_stream</span><span class="p">(</span><span class="s1">'key'</span><span class="p">,</span> <span class="k">TRUE</span><span class="p">);</span> <span class="c1">// XSS Clean</span> +<span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">input_stream</span><span class="p">(</span><span class="s1">'key'</span><span class="p">,</span> <span class="k">FALSE</span><span class="p">);</span> <span class="c1">// No XSS filter</span> +</pre></div> +</div> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">You can utilize <code class="docutils literal"><span class="pre">method()</span></code> in order to know if you’re reading +PUT, DELETE or PATCH data.</p> +</div> +</div> +</div> +<div class="section" id="class-reference"> +<h2><a class="toc-backref" href="#id7">Class Reference</a><a class="headerlink" href="#class-reference" title="Permalink to this headline">¶</a></h2> +<dl class="class"> +<dt id="CI_Input"> +<em class="property">class </em><code class="descname">CI_Input</code><a class="headerlink" href="#CI_Input" title="Permalink to this definition">¶</a></dt> +<dd><dl class="attribute"> +<dt> +<code class="descname">$raw_input_stream</code></dt> +<dd><p>Read only property that will return php://input data as is.</p> +<p>The property can be read multiple times.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Input::post"> +<code class="descname">post</code><span class="sig-paren">(</span><span class="optional">[</span><em>$index = NULL</em><span class="optional">[</span>, <em>$xss_clean = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Input::post" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$index</strong> (<em>mixed</em>) – POST parameter name</li> +<li><strong>$xss_clean</strong> (<em>bool</em>) – Whether to apply XSS filtering</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">$_POST if no parameters supplied, otherwise the POST value if found or NULL if not</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p> +</td> +</tr> +</tbody> +</table> +<p>The first parameter will contain the name of the POST item you are +looking for:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">post</span><span class="p">(</span><span class="s1">'some_data'</span><span class="p">);</span> +</pre></div> +</div> +<p>The method returns NULL if the item you are attempting to retrieve +does not exist.</p> +<p>The second optional parameter lets you run the data through the XSS +filter. It’s enabled by setting the second parameter to boolean TRUE +or by setting your <code class="docutils literal"><span class="pre">$config['global_xss_filtering']</span></code> to TRUE.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">post</span><span class="p">(</span><span class="s1">'some_data'</span><span class="p">,</span> <span class="k">TRUE</span><span class="p">);</span> +</pre></div> +</div> +<p>To return an array of all POST items call without any parameters.</p> +<p>To return all POST items and pass them through the XSS filter set the +first parameter NULL while setting the second parameter to boolean TRUE.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">post</span><span class="p">(</span><span class="k">NULL</span><span class="p">,</span> <span class="k">TRUE</span><span class="p">);</span> <span class="c1">// returns all POST items with XSS filter</span> +<span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">post</span><span class="p">(</span><span class="k">NULL</span><span class="p">,</span> <span class="k">FALSE</span><span class="p">);</span> <span class="c1">// returns all POST items without XSS filter</span> +</pre></div> +</div> +<p>To return an array of multiple POST parameters, pass all the required keys +as an array.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">post</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">'field1'</span><span class="p">,</span> <span class="s1">'field2'</span><span class="p">));</span> +</pre></div> +</div> +<p>Same rule applied here, to retrieve the parameters with XSS filtering enabled, set the +second parameter to boolean TRUE.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">post</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">'field1'</span><span class="p">,</span> <span class="s1">'field2'</span><span class="p">),</span> <span class="k">TRUE</span><span class="p">);</span> +</pre></div> +</div> +</dd></dl> + +<dl class="method"> +<dt id="CI_Input::get"> +<code class="descname">get</code><span class="sig-paren">(</span><span class="optional">[</span><em>$index = NULL</em><span class="optional">[</span>, <em>$xss_clean = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Input::get" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$index</strong> (<em>mixed</em>) – GET parameter name</li> +<li><strong>$xss_clean</strong> (<em>bool</em>) – Whether to apply XSS filtering</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">$_GET if no parameters supplied, otherwise the GET value if found or NULL if not</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p> +</td> +</tr> +</tbody> +</table> +<p>This method is identical to <code class="docutils literal"><span class="pre">post()</span></code>, only it fetches GET data.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">get</span><span class="p">(</span><span class="s1">'some_data'</span><span class="p">,</span> <span class="k">TRUE</span><span class="p">);</span> +</pre></div> +</div> +<p>To return an array of all GET items call without any parameters.</p> +<p>To return all GET items and pass them through the XSS filter set the +first parameter NULL while setting the second parameter to boolean TRUE.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">get</span><span class="p">(</span><span class="k">NULL</span><span class="p">,</span> <span class="k">TRUE</span><span class="p">);</span> <span class="c1">// returns all GET items with XSS filter</span> +<span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">get</span><span class="p">(</span><span class="k">NULL</span><span class="p">,</span> <span class="k">FALSE</span><span class="p">);</span> <span class="c1">// returns all GET items without XSS filtering</span> +</pre></div> +</div> +<p>To return an array of multiple GET parameters, pass all the required keys +as an array.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">get</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">'field1'</span><span class="p">,</span> <span class="s1">'field2'</span><span class="p">));</span> +</pre></div> +</div> +<p>Same rule applied here, to retrieve the parameters with XSS filtering enabled, set the +second parameter to boolean TRUE.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">get</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">'field1'</span><span class="p">,</span> <span class="s1">'field2'</span><span class="p">),</span> <span class="k">TRUE</span><span class="p">);</span> +</pre></div> +</div> +</dd></dl> + +<dl class="method"> +<dt id="CI_Input::post_get"> +<code class="descname">post_get</code><span class="sig-paren">(</span><em>$index</em><span class="optional">[</span>, <em>$xss_clean = NULL</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Input::post_get" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$index</strong> (<em>string</em>) – POST/GET parameter name</li> +<li><strong>$xss_clean</strong> (<em>bool</em>) – Whether to apply XSS filtering</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">POST/GET value if found, NULL if not</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p> +</td> +</tr> +</tbody> +</table> +<p>This method works pretty much the same way as <code class="docutils literal"><span class="pre">post()</span></code> and <code class="docutils literal"><span class="pre">get()</span></code>, +only combined. It will search through both POST and GET streams for data, +looking in POST first, and then in GET:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">post_get</span><span class="p">(</span><span class="s1">'some_data'</span><span class="p">,</span> <span class="k">TRUE</span><span class="p">);</span> +</pre></div> +</div> +</dd></dl> + +<dl class="method"> +<dt id="CI_Input::get_post"> +<code class="descname">get_post</code><span class="sig-paren">(</span><em>$index</em><span class="optional">[</span>, <em>$xss_clean = NULL</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Input::get_post" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$index</strong> (<em>string</em>) – GET/POST parameter name</li> +<li><strong>$xss_clean</strong> (<em>bool</em>) – Whether to apply XSS filtering</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">GET/POST value if found, NULL if not</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p> +</td> +</tr> +</tbody> +</table> +<p>This method works the same way as <code class="docutils literal"><span class="pre">post_get()</span></code> only it looks for GET +data first.</p> +<blockquote> +<div>$this->input->get_post(‘some_data’, TRUE);</div></blockquote> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">This method used to act EXACTLY like <code class="docutils literal"><span class="pre">post_get()</span></code>, but it’s +behavior has changed in CodeIgniter 3.0.</p> +</div> +</dd></dl> + +<dl class="method"> +<dt id="CI_Input::cookie"> +<code class="descname">cookie</code><span class="sig-paren">(</span><span class="optional">[</span><em>$index = NULL</em><span class="optional">[</span>, <em>$xss_clean = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Input::cookie" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$index</strong> (<em>mixed</em>) – COOKIE name</li> +<li><strong>$xss_clean</strong> (<em>bool</em>) – Whether to apply XSS filtering</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">$_COOKIE if no parameters supplied, otherwise the COOKIE value if found or NULL if not</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p> +</td> +</tr> +</tbody> +</table> +<p>This method is identical to <code class="docutils literal"><span class="pre">post()</span></code> and <code class="docutils literal"><span class="pre">get()</span></code>, only it fetches cookie +data:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">cookie</span><span class="p">(</span><span class="s1">'some_cookie'</span><span class="p">);</span> +<span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">cookie</span><span class="p">(</span><span class="s1">'some_cookie'</span><span class="p">,</span> <span class="k">TRUE</span><span class="p">);</span> <span class="c1">// with XSS filter</span> +</pre></div> +</div> +<p>To return an array of multiple cookie values, pass all the required keys +as an array.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">cookie</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">'some_cookie'</span><span class="p">,</span> <span class="s1">'some_cookie2'</span><span class="p">));</span> +</pre></div> +</div> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">Unlike the <a class="reference internal" href="../helpers/cookie_helper.html"><span class="doc">Cookie Helper</span></a> +function <a class="reference internal" href="../helpers/cookie_helper.html#get_cookie" title="get_cookie"><code class="xref php php-func docutils literal"><span class="pre">get_cookie()</span></code></a>, this method does NOT prepend +your configured <code class="docutils literal"><span class="pre">$config['cookie_prefix']</span></code> value.</p> +</div> +</dd></dl> + +<dl class="method"> +<dt id="CI_Input::server"> +<code class="descname">server</code><span class="sig-paren">(</span><em>$index</em><span class="optional">[</span>, <em>$xss_clean = NULL</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Input::server" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$index</strong> (<em>mixed</em>) – Value name</li> +<li><strong>$xss_clean</strong> (<em>bool</em>) – Whether to apply XSS filtering</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">$_SERVER item value if found, NULL if not</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p> +</td> +</tr> +</tbody> +</table> +<p>This method is identical to the <code class="docutils literal"><span class="pre">post()</span></code>, <code class="docutils literal"><span class="pre">get()</span></code> and <code class="docutils literal"><span class="pre">cookie()</span></code> +methods, only it fetches server data (<code class="docutils literal"><span class="pre">$_SERVER</span></code>):</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">server</span><span class="p">(</span><span class="s1">'some_data'</span><span class="p">);</span> +</pre></div> +</div> +<p>To return an array of multiple <code class="docutils literal"><span class="pre">$_SERVER</span></code> values, pass all the required keys +as an array.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">server</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">'SERVER_PROTOCOL'</span><span class="p">,</span> <span class="s1">'REQUEST_URI'</span><span class="p">));</span> +</pre></div> +</div> +</dd></dl> + +<dl class="method"> +<dt id="CI_Input::input_stream"> +<code class="descname">input_stream</code><span class="sig-paren">(</span><span class="optional">[</span><em>$index = NULL</em><span class="optional">[</span>, <em>$xss_clean = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Input::input_stream" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$index</strong> (<em>mixed</em>) – Key name</li> +<li><strong>$xss_clean</strong> (<em>bool</em>) – Whether to apply XSS filtering</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Input stream array if no parameters supplied, otherwise the specified value if found or NULL if not</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p> +</td> +</tr> +</tbody> +</table> +<p>This method is identical to <code class="docutils literal"><span class="pre">get()</span></code>, <code class="docutils literal"><span class="pre">post()</span></code> and <code class="docutils literal"><span class="pre">cookie()</span></code>, +only it fetches the <em>php://input</em> stream data.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Input::set_cookie"> +<code class="descname">set_cookie</code><span class="sig-paren">(</span><em>$name = ''</em><span class="optional">[</span>, <em>$value = ''</em><span class="optional">[</span>, <em>$expire = ''</em><span class="optional">[</span>, <em>$domain = ''</em><span class="optional">[</span>, <em>$path = '/'</em><span class="optional">[</span>, <em>$prefix = ''</em><span class="optional">[</span>, <em>$secure = NULL</em><span class="optional">[</span>, <em>$httponly = NULL</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Input::set_cookie" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$name</strong> (<em>mixed</em>) – Cookie name or an array of parameters</li> +<li><strong>$value</strong> (<em>string</em>) – Cookie value</li> +<li><strong>$expire</strong> (<em>int</em>) – Cookie expiration time in seconds</li> +<li><strong>$domain</strong> (<em>string</em>) – Cookie domain</li> +<li><strong>$path</strong> (<em>string</em>) – Cookie path</li> +<li><strong>$prefix</strong> (<em>string</em>) – Cookie name prefix</li> +<li><strong>$secure</strong> (<em>bool</em>) – Whether to only transfer the cookie through HTTPS</li> +<li><strong>$httponly</strong> (<em>bool</em>) – Whether to only make the cookie accessible for HTTP requests (no JavaScript)</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">void</p> +</td> +</tr> +</tbody> +</table> +<p>Sets a cookie containing the values you specify. There are two ways to +pass information to this method so that a cookie can be set: Array +Method, and Discrete Parameters:</p> +<p><strong>Array Method</strong></p> +<p>Using this method, an associative array is passed to the first +parameter:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$cookie</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span> + <span class="s1">'name'</span> <span class="o">=></span> <span class="s1">'The Cookie Name'</span><span class="p">,</span> + <span class="s1">'value'</span> <span class="o">=></span> <span class="s1">'The Value'</span><span class="p">,</span> + <span class="s1">'expire'</span> <span class="o">=></span> <span class="s1">'86500'</span><span class="p">,</span> + <span class="s1">'domain'</span> <span class="o">=></span> <span class="s1">'.some-domain.com'</span><span class="p">,</span> + <span class="s1">'path'</span> <span class="o">=></span> <span class="s1">'/'</span><span class="p">,</span> + <span class="s1">'prefix'</span> <span class="o">=></span> <span class="s1">'myprefix_'</span><span class="p">,</span> + <span class="s1">'secure'</span> <span class="o">=></span> <span class="k">TRUE</span> +<span class="p">);</span> + +<span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">set_cookie</span><span class="p">(</span><span class="nv">$cookie</span><span class="p">);</span> +</pre></div> +</div> +<p><strong>Notes</strong></p> +<p>Only the name and value are required. To delete a cookie set it with the +expiration blank.</p> +<p>The expiration is set in <strong>seconds</strong>, which will be added to the current +time. Do not include the time, but rather only the number of seconds +from <em>now</em> that you wish the cookie to be valid. If the expiration is +set to zero the cookie will only last as long as the browser is open.</p> +<p>For site-wide cookies regardless of how your site is requested, add your +URL to the <strong>domain</strong> starting with a period, like this: +.your-domain.com</p> +<p>The path is usually not needed since the method sets a root path.</p> +<p>The prefix is only needed if you need to avoid name collisions with +other identically named cookies for your server.</p> +<p>The <em>httponly</em> and <em>secure</em> flags, when omitted, will default to your +<code class="docutils literal"><span class="pre">$config['cookie_httponly']</span></code> and <code class="docutils literal"><span class="pre">$config['cookie_secure']</span></code> settings.</p> +<p><strong>Discrete Parameters</strong></p> +<p>If you prefer, you can set the cookie by passing data using individual +parameters:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">set_cookie</span><span class="p">(</span><span class="nv">$name</span><span class="p">,</span> <span class="nv">$value</span><span class="p">,</span> <span class="nv">$expire</span><span class="p">,</span> <span class="nv">$domain</span><span class="p">,</span> <span class="nv">$path</span><span class="p">,</span> <span class="nv">$prefix</span><span class="p">,</span> <span class="nv">$secure</span><span class="p">);</span> +</pre></div> +</div> +</dd></dl> + +<dl class="method"> +<dt id="CI_Input::ip_address"> +<code class="descname">ip_address</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Input::ip_address" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Visitor’s IP address or ‘0.0.0.0’ if not valid</td> +</tr> +<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">string</td> +</tr> +</tbody> +</table> +<p>Returns the IP address for the current user. If the IP address is not +valid, the method will return ‘0.0.0.0’:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">echo</span> <span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">ip_address</span><span class="p">();</span> +</pre></div> +</div> +<div class="admonition important"> +<p class="first admonition-title">Important</p> +<p class="last">This method takes into account the <code class="docutils literal"><span class="pre">$config['proxy_ips']</span></code> +setting and will return the reported HTTP_X_FORWARDED_FOR, +HTTP_CLIENT_IP, HTTP_X_CLIENT_IP or HTTP_X_CLUSTER_CLIENT_IP +address for the allowed IP addresses.</p> +</div> +</dd></dl> + +<dl class="method"> +<dt id="CI_Input::valid_ip"> +<code class="descname">valid_ip</code><span class="sig-paren">(</span><em>$ip</em><span class="optional">[</span>, <em>$which = ''</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Input::valid_ip" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$ip</strong> (<em>string</em>) – IP address</li> +<li><strong>$which</strong> (<em>string</em>) – IP protocol (‘ipv4’ or ‘ipv6’)</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE if the address is valid, FALSE if not</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p> +</td> +</tr> +</tbody> +</table> +<p>Takes an IP address as input and returns TRUE or FALSE (boolean) depending +on whether it is valid or not.</p> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">The $this->input->ip_address() method above automatically +validates the IP address.</p> +</div> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">if</span> <span class="p">(</span> <span class="o">!</span> <span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">valid_ip</span><span class="p">(</span><span class="nv">$ip</span><span class="p">))</span> +<span class="p">{</span> + <span class="k">echo</span> <span class="s1">'Not Valid'</span><span class="p">;</span> +<span class="p">}</span> +<span class="k">else</span> +<span class="p">{</span> + <span class="k">echo</span> <span class="s1">'Valid'</span><span class="p">;</span> +<span class="p">}</span> +</pre></div> +</div> +<p>Accepts an optional second string parameter of ‘ipv4’ or ‘ipv6’ to specify +an IP format. The default checks for both formats.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Input::user_agent"> +<code class="descname">user_agent</code><span class="sig-paren">(</span><span class="optional">[</span><em>$xss_clean = NULL</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Input::user_agent" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">User agent string or NULL if not set</p> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$xss_clean</strong> (<em>bool</em>) – Whether to apply XSS filtering</li> +</ul> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p> +</td> +</tr> +</tbody> +</table> +<p>Returns the user agent string (web browser) being used by the current user, +or NULL if it’s not available.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">echo</span> <span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">user_agent</span><span class="p">();</span> +</pre></div> +</div> +<p>See the <a class="reference internal" href="user_agent.html"><span class="doc">User Agent Class</span></a> for methods which extract +information from the user agent string.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Input::request_headers"> +<code class="descname">request_headers</code><span class="sig-paren">(</span><span class="optional">[</span><em>$xss_clean = FALSE</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Input::request_headers" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$xss_clean</strong> (<em>bool</em>) – Whether to apply XSS filtering</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">An array of HTTP request headers</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">array</p> +</td> +</tr> +</tbody> +</table> +<p>Returns an array of HTTP request headers. +Useful if running in a non-Apache environment where +<a class="reference external" href="http://php.net/apache_request_headers">apache_request_headers()</a> +will not be supported.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$headers</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">request_headers</span><span class="p">();</span> +</pre></div> +</div> +</dd></dl> + +<dl class="method"> +<dt id="CI_Input::get_request_header"> +<code class="descname">get_request_header</code><span class="sig-paren">(</span><em>$index</em><span class="optional">[</span>, <em>$xss_clean = FALSE</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Input::get_request_header" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$index</strong> (<em>string</em>) – HTTP request header name</li> +<li><strong>$xss_clean</strong> (<em>bool</em>) – Whether to apply XSS filtering</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">An HTTP request header or NULL if not found</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">string</p> +</td> +</tr> +</tbody> +</table> +<p>Returns a single member of the request headers array or NULL +if the searched header is not found.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">get_request_header</span><span class="p">(</span><span class="s1">'some-header'</span><span class="p">,</span> <span class="k">TRUE</span><span class="p">);</span> +</pre></div> +</div> +</dd></dl> + +<dl class="method"> +<dt id="CI_Input::is_ajax_request"> +<code class="descname">is_ajax_request</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Input::is_ajax_request" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">TRUE if it is an Ajax request, FALSE if not</td> +</tr> +<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">bool</td> +</tr> +</tbody> +</table> +<p>Checks to see if the HTTP_X_REQUESTED_WITH server header has been +set, and returns boolean TRUE if it is or FALSE if not.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Input::is_cli_request"> +<code class="descname">is_cli_request</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Input::is_cli_request" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">TRUE if it is a CLI request, FALSE if not</td> +</tr> +<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">bool</td> +</tr> +</tbody> +</table> +<p>Checks to see if the application was run from the command-line +interface.</p> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">This method checks both the PHP SAPI name currently in use +and if the <code class="docutils literal"><span class="pre">STDIN</span></code> constant is defined, which is usually a +failsafe way to see if PHP is being run via the command line.</p> +</div> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">is_cli_request</span><span class="p">()</span> +</pre></div> +</div> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">This method is DEPRECATED and is now just an alias for the +<code class="xref py py-func docutils literal"><span class="pre">is_cli()</span></code> function.</p> +</div> +</dd></dl> + +<dl class="method"> +<dt id="CI_Input::method"> +<code class="descname">method</code><span class="sig-paren">(</span><span class="optional">[</span><em>$upper = FALSE</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Input::method" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$upper</strong> (<em>bool</em>) – Whether to return the request method name in upper or lower case</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">HTTP request method</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">string</p> +</td> +</tr> +</tbody> +</table> +<p>Returns the <code class="docutils literal"><span class="pre">$_SERVER['REQUEST_METHOD']</span></code>, with the option to set it +in uppercase or lowercase.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">echo</span> <span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">method</span><span class="p">(</span><span class="k">TRUE</span><span class="p">);</span> <span class="c1">// Outputs: POST</span> +<span class="k">echo</span> <span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">method</span><span class="p">(</span><span class="k">FALSE</span><span class="p">);</span> <span class="c1">// Outputs: post</span> +<span class="k">echo</span> <span class="nv">$this</span><span class="o">-></span><span class="na">input</span><span class="o">-></span><span class="na">method</span><span class="p">();</span> <span class="c1">// Outputs: post</span> +</pre></div> +</div> +</dd></dl> + +</dd></dl> + +</div> +</div> + + + </div> + <footer> + + <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation"> + + <a href="javascript.html" class="btn btn-neutral float-right" title="Javascript Class">Next <span class="fa fa-arrow-circle-right"></span></a> + + + <a href="image_lib.html" class="btn btn-neutral" title="Image 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