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diff --git a/user_guide/libraries/output.html b/user_guide/libraries/output.html new file mode 100644 index 000000000..a4c208832 --- /dev/null +++ b/user_guide/libraries/output.html @@ -0,0 +1,912 @@ + + +<!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>Output Class — CodeIgniter 3.1.7 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 3.1.7 documentation" href="../index.html"/> + <link rel="up" title="Libraries" href="index.html"/> + <link rel="next" title="Pagination Class" href="pagination.html"/> + <link rel="prev" title="Migrations Class" href="migration.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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class="reference internal" href="../overview/appflow.html">Application Flow Chart</a></li> +<li class="toctree-l2"><a class="reference internal" href="../overview/mvc.html">Model-View-Controller</a></li> +<li class="toctree-l2"><a class="reference internal" href="../overview/goals.html">Architectural Goals</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" href="../tutorial/index.html">Tutorial</a><ul> +<li class="toctree-l2"><a class="reference internal" href="../tutorial/static_pages.html">Static pages</a></li> +<li class="toctree-l2"><a class="reference internal" href="../tutorial/news_section.html">News section</a></li> +<li class="toctree-l2"><a class="reference internal" href="../tutorial/create_news_items.html">Create news items</a></li> +<li class="toctree-l2"><a class="reference internal" href="../tutorial/conclusion.html">Conclusion</a></li> +</ul> +</li> +</ul> +<ul> +<li class="toctree-l1"><a class="reference internal" 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class="toctree-l2"><a class="reference internal" href="../general/helpers.html">Helpers</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/libraries.html">Using CodeIgniter Libraries</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/creating_libraries.html">Creating Libraries</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/drivers.html">Using CodeIgniter Drivers</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/creating_drivers.html">Creating Drivers</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/core_classes.html">Creating Core System Classes</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/ancillary_classes.html">Creating Ancillary Classes</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/hooks.html">Hooks - Extending the Framework Core</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/autoloader.html">Auto-loading Resources</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/common_functions.html">Common Functions</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/compatibility_functions.html">Compatibility Functions</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/routing.html">URI Routing</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/errors.html">Error Handling</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/caching.html">Caching</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/profiling.html">Profiling Your Application</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/cli.html">Running via the CLI</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/managing_apps.html">Managing your 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 class="reference internal" href="cart.html">Shopping Cart Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="config.html">Config Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="email.html">Email Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="encrypt.html">Encrypt Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="encryption.html">Encryption Library</a></li> +<li class="toctree-l2"><a class="reference internal" href="file_uploading.html">File Uploading Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="form_validation.html">Form Validation</a></li> +<li class="toctree-l2"><a class="reference internal" href="ftp.html">FTP Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="image_lib.html">Image Manipulation Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="input.html">Input Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="javascript.html">Javascript Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="language.html">Language Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="loader.html">Loader Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="migration.html">Migrations Class</a></li> +<li class="toctree-l2 current"><a class="current reference internal" href="#">Output Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="pagination.html">Pagination Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="parser.html">Template Parser Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="security.html">Security Class</a></li> +<li class="toctree-l2"><a class="reference internal" href="sessions.html">Session Library</a></li> +<li class="toctree-l2"><a class="reference internal" href="table.html">HTML Table Class</a></li> +<li 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>Output 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="output-class"> +<h1>Output Class<a class="headerlink" href="#output-class" title="Permalink to this headline">¶</a></h1> +<p>The Output class is a core class with one main function: To send the +finalized web page to the requesting browser. It is also responsible for +<a class="reference internal" href="../general/caching.html"><span class="doc">caching</span></a> your web pages, if you use that +feature.</p> +<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> +<p>Under normal circumstances you won’t even notice the Output class since +it works transparently without your intervention. For example, when you +use the <a class="reference internal" href="loader.html"><span class="doc">Loader</span></a> class to load a view file, +it’s automatically passed to the Output class, which will be called +automatically by CodeIgniter at the end of system execution. It is +possible, however, for you to manually intervene with the output if you +need to.</p> +<div class="contents local topic" id="contents"> +<ul class="simple"> +<li><a class="reference internal" href="#class-reference" id="id1">Class Reference</a></li> +</ul> +</div> +<div class="custom-index container"></div><div class="section" id="class-reference"> +<h2><a class="toc-backref" href="#id1">Class Reference</a><a class="headerlink" href="#class-reference" title="Permalink to this headline">¶</a></h2> +<dl class="class"> +<dt id="CI_Output"> +<em class="property">class </em><code class="descname">CI_Output</code><a class="headerlink" href="#CI_Output" title="Permalink to this definition">¶</a></dt> +<dd><dl class="attribute"> +<dt> +<code class="descname">$parse_exec_vars = TRUE;</code></dt> +<dd><p>Enables/disables parsing of the {elapsed_time} and {memory_usage} pseudo-variables.</p> +<p>CodeIgniter will parse those tokens in your output by default. To disable this, set +this property to FALSE in your controller.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">output</span><span class="o">-></span><span class="na">parse_exec_vars</span> <span class="o">=</span> <span class="k">FALSE</span><span class="p">;</span> +</pre></div> +</div> +</dd></dl> + +<dl class="method"> +<dt id="CI_Output::set_output"> +<code class="descname">set_output</code><span class="sig-paren">(</span><em>$output</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_Output::set_output" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$output</strong> (<em>string</em>) – String to set the output to</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_Output instance (method chaining)</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_Output</p> +</td> +</tr> +</tbody> +</table> +<p>Permits you to manually set the final output string. Usage example:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">output</span><span class="o">-></span><span class="na">set_output</span><span class="p">(</span><span class="nv">$data</span><span class="p">);</span> +</pre></div> +</div> +<div class="admonition important"> +<p class="first admonition-title">Important</p> +<p class="last">If you do set your output manually, it must be the last thing done +in the function you call it from. For example, if you build a page in one +of your controller methods, don’t set the output until the end.</p> +</div> +</dd></dl> + +<dl class="method"> +<dt id="CI_Output::set_content_type"> +<code class="descname">set_content_type</code><span class="sig-paren">(</span><em>$mime_type</em><span class="optional">[</span>, <em>$charset = NULL</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Output::set_content_type" 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>$mime_type</strong> (<em>string</em>) – MIME Type idenitifer string</li> +<li><strong>$charset</strong> (<em>string</em>) – Character set</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_Output instance (method chaining)</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_Output</p> +</td> +</tr> +</tbody> +</table> +<p>Permits you to set the mime-type of your page so you can serve JSON data, JPEG’s, XML, etc easily.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">output</span> + <span class="o">-></span><span class="na">set_content_type</span><span class="p">(</span><span class="s1">'application/json'</span><span class="p">)</span> + <span class="o">-></span><span class="na">set_output</span><span class="p">(</span><span class="nb">json_encode</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">'foo'</span> <span class="o">=></span> <span class="s1">'bar'</span><span class="p">)));</span> + +<span class="nv">$this</span><span class="o">-></span><span class="na">output</span> + <span class="o">-></span><span class="na">set_content_type</span><span class="p">(</span><span class="s1">'jpeg'</span><span class="p">)</span> <span class="c1">// You could also use ".jpeg" which will have the full stop removed before looking in config/mimes.php</span> + <span class="o">-></span><span class="na">set_output</span><span class="p">(</span><span class="nb">file_get_contents</span><span class="p">(</span><span class="s1">'files/something.jpg'</span><span class="p">));</span> +</pre></div> +</div> +<div class="admonition important"> +<p class="first admonition-title">Important</p> +<p class="last">Make sure any non-mime string you pass to this method +exists in <em>application/config/mimes.php</em> or it will have no effect.</p> +</div> +<p>You can also set the character set of the document, by passing a second argument:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">output</span><span class="o">-></span><span class="na">set_content_type</span><span class="p">(</span><span class="s1">'css'</span><span class="p">,</span> <span class="s1">'utf-8'</span><span class="p">);</span> +</pre></div> +</div> +</dd></dl> + +<dl class="method"> +<dt id="CI_Output::get_content_type"> +<code class="descname">get_content_type</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Output::get_content_type" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Content-Type string</td> +</tr> +<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">string</td> +</tr> +</tbody> +</table> +<p>Returns the Content-Type HTTP header that’s currently in use, excluding the character set value.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$mime</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">output</span><span class="o">-></span><span class="na">get_content_type</span><span class="p">();</span> +</pre></div> +</div> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">If not set, the default return value is ‘text/html’.</p> +</div> +</dd></dl> + +<dl class="method"> +<dt id="CI_Output::get_header"> +<code class="descname">get_header</code><span class="sig-paren">(</span><em>$header</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_Output::get_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>$header</strong> (<em>string</em>) – HTTP header name</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">HTTP response header or NULL if not found</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p> +</td> +</tr> +</tbody> +</table> +<p>Returns the requested HTTP header value, or NULL if the requested header is not set. +Example:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">output</span><span class="o">-></span><span class="na">set_content_type</span><span class="p">(</span><span class="s1">'text/plain'</span><span class="p">,</span> <span class="s1">'UTF-8'</span><span class="p">);</span> +<span class="k">echo</span> <span class="nv">$this</span><span class="o">-></span><span class="na">output</span><span class="o">-></span><span class="na">get_header</span><span class="p">(</span><span class="s1">'content-type'</span><span class="p">);</span> +<span class="c1">// Outputs: text/plain; charset=utf-8</span> +</pre></div> +</div> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">The header name is compared in a case-insensitive manner.</p> +</div> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">Raw headers sent via PHP’s native <code class="docutils literal"><span class="pre">header()</span></code> function are also detected.</p> +</div> +</dd></dl> + +<dl class="method"> +<dt id="CI_Output::get_output"> +<code class="descname">get_output</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Output::get_output" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">Output string</td> +</tr> +<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">string</td> +</tr> +</tbody> +</table> +<p>Permits you to manually retrieve any output that has been sent for +storage in the output class. Usage example:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$string</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">output</span><span class="o">-></span><span class="na">get_output</span><span class="p">();</span> +</pre></div> +</div> +<p>Note that data will only be retrievable from this function if it has +been previously sent to the output class by one of the CodeIgniter +functions like <code class="docutils literal"><span class="pre">$this->load->view()</span></code>.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Output::append_output"> +<code class="descname">append_output</code><span class="sig-paren">(</span><em>$output</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_Output::append_output" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$output</strong> (<em>string</em>) – Additional output data to append</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_Output instance (method chaining)</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_Output</p> +</td> +</tr> +</tbody> +</table> +<p>Appends data onto the output string.</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">output</span><span class="o">-></span><span class="na">append_output</span><span class="p">(</span><span class="nv">$data</span><span class="p">);</span> +</pre></div> +</div> +</dd></dl> + +<dl class="method"> +<dt id="CI_Output::set_header"> +<code class="descname">set_header</code><span class="sig-paren">(</span><em>$header</em><span class="optional">[</span>, <em>$replace = TRUE</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Output::set_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>$header</strong> (<em>string</em>) – HTTP response header</li> +<li><strong>$replace</strong> (<em>bool</em>) – Whether to replace the old header value, if it is already set</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_Output instance (method chaining)</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_Output</p> +</td> +</tr> +</tbody> +</table> +<p>Permits you to manually set server headers, which the output class will +send for you when outputting the final rendered display. Example:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">output</span><span class="o">-></span><span class="na">set_header</span><span class="p">(</span><span class="s1">'HTTP/1.0 200 OK'</span><span class="p">);</span> +<span class="nv">$this</span><span class="o">-></span><span class="na">output</span><span class="o">-></span><span class="na">set_header</span><span class="p">(</span><span class="s1">'HTTP/1.1 200 OK'</span><span class="p">);</span> +<span class="nv">$this</span><span class="o">-></span><span class="na">output</span><span class="o">-></span><span class="na">set_header</span><span class="p">(</span><span class="s1">'Last-Modified: '</span><span class="o">.</span><span class="nb">gmdate</span><span class="p">(</span><span class="s1">'D, d M Y H:i:s'</span><span class="p">,</span> <span class="nv">$last_update</span><span class="p">)</span><span class="o">.</span><span class="s1">' GMT'</span><span class="p">);</span> +<span class="nv">$this</span><span class="o">-></span><span class="na">output</span><span class="o">-></span><span class="na">set_header</span><span class="p">(</span><span class="s1">'Cache-Control: no-store, no-cache, must-revalidate'</span><span class="p">);</span> +<span class="nv">$this</span><span class="o">-></span><span class="na">output</span><span class="o">-></span><span class="na">set_header</span><span class="p">(</span><span class="s1">'Cache-Control: post-check=0, pre-check=0'</span><span class="p">);</span> +<span class="nv">$this</span><span class="o">-></span><span class="na">output</span><span class="o">-></span><span class="na">set_header</span><span class="p">(</span><span class="s1">'Pragma: no-cache'</span><span class="p">);</span> +</pre></div> +</div> +</dd></dl> + +<dl class="method"> +<dt id="CI_Output::set_status_header"> +<code class="descname">set_status_header</code><span class="sig-paren">(</span><span class="optional">[</span><em>$code = 200</em><span class="optional">[</span>, <em>$text = ''</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Output::set_status_header" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$code</strong> (<em>int</em>) – HTTP status code</li> +<li><strong>$text</strong> (<em>string</em>) – Optional message</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_Output instance (method chaining)</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_Output</p> +</td> +</tr> +</tbody> +</table> +<p>Permits you to manually set a server status header. Example:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">output</span><span class="o">-></span><span class="na">set_status_header</span><span class="p">(</span><span class="mi">401</span><span class="p">);</span> +<span class="c1">// Sets the header as: Unauthorized</span> +</pre></div> +</div> +<p><a class="reference external" href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html">See here</a> for a full list of headers.</p> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">This method is an alias for <a class="reference internal" href="../general/common_functions.html"><span class="doc">Common function</span></a> +<code class="xref py py-func docutils literal"><span class="pre">set_status_header()</span></code>.</p> +</div> +</dd></dl> + +<dl class="method"> +<dt id="CI_Output::enable_profiler"> +<code class="descname">enable_profiler</code><span class="sig-paren">(</span><span class="optional">[</span><em>$val = TRUE</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Output::enable_profiler" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$val</strong> (<em>bool</em>) – Whether to enable or disable the Profiler</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_Output instance (method chaining)</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_Output</p> +</td> +</tr> +</tbody> +</table> +<p>Permits you to enable/disable the <a class="reference internal" href="../general/profiling.html"><span class="doc">Profiler</span></a>, which will display benchmark +and other data at the bottom of your pages for debugging and optimization purposes.</p> +<p>To enable the profiler place the following line anywhere within your +<a class="reference internal" href="../general/controllers.html"><span class="doc">Controller</span></a> methods:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">output</span><span class="o">-></span><span class="na">enable_profiler</span><span class="p">(</span><span class="k">TRUE</span><span class="p">);</span> +</pre></div> +</div> +<p>When enabled a report will be generated and inserted at the bottom of your pages.</p> +<p>To disable the profiler you would use:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">output</span><span class="o">-></span><span class="na">enable_profiler</span><span class="p">(</span><span class="k">FALSE</span><span class="p">);</span> +</pre></div> +</div> +</dd></dl> + +<dl class="method"> +<dt id="CI_Output::set_profiler_sections"> +<code class="descname">set_profiler_sections</code><span class="sig-paren">(</span><em>$sections</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_Output::set_profiler_sections" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$sections</strong> (<em>array</em>) – Profiler sections</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_Output instance (method chaining)</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_Output</p> +</td> +</tr> +</tbody> +</table> +<p>Permits you to enable/disable specific sections of the Profiler when it is enabled. +Please refer to the <a class="reference internal" href="../general/profiling.html"><span class="doc">Profiler</span></a> documentation for further information.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Output::cache"> +<code class="descname">cache</code><span class="sig-paren">(</span><em>$time</em><span class="sig-paren">)</span><a class="headerlink" href="#CI_Output::cache" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$time</strong> (<em>int</em>) – Cache expiration time in minutes</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_Output instance (method chaining)</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_Output</p> +</td> +</tr> +</tbody> +</table> +<p>Caches the current page for the specified amount of minutes.</p> +<p>For more information, please see the <a class="reference internal" href="../general/caching.html"><span class="doc">caching documentation</span></a>.</p> +</dd></dl> + +<dl class="method"> +<dt id="CI_Output::_display"> +<code class="descname">_display</code><span class="sig-paren">(</span><span class="optional">[</span><em>$output = ''</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Output::_display" title="Permalink to this definition">¶</a></dt> +<dd><table class="docutils field-list" frame="void" rules="none"> +<col class="field-name" /> +<col class="field-body" /> +<tbody valign="top"> +<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple"> +<li><strong>$output</strong> (<em>string</em>) – Output data override</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">void</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">void</p> +</td> +</tr> +</tbody> +</table> +<p>Sends finalized output data to the browser along with any server headers. It also stops benchmark +timers.</p> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">This method is called automatically at the end of script execution, you won’t need to +call it manually unless you are aborting script execution using <code class="docutils literal"><span class="pre">exit()</span></code> or <code class="docutils literal"><span class="pre">die()</span></code> in your code.</p> +</div> +<p>Example:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$response</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span><span class="s1">'status'</span> <span class="o">=></span> <span class="s1">'OK'</span><span class="p">);</span> + +<span class="nv">$this</span><span class="o">-></span><span class="na">output</span> + <span class="o">-></span><span class="na">set_status_header</span><span class="p">(</span><span class="mi">200</span><span class="p">)</span> + <span class="o">-></span><span class="na">set_content_type</span><span class="p">(</span><span class="s1">'application/json'</span><span class="p">,</span> <span class="s1">'utf-8'</span><span class="p">)</span> + <span class="o">-></span><span class="na">set_output</span><span class="p">(</span><span class="nb">json_encode</span><span class="p">(</span><span class="nv">$response</span><span class="p">,</span> <span class="nx">JSON_PRETTY_PRINT</span> <span class="o">|</span> <span class="nx">JSON_UNESCAPED_UNICODE</span> <span class="o">|</span> <span class="nx">JSON_UNESCAPED_SLASHES</span><span class="p">))</span> + <span class="o">-></span><span class="na">_display</span><span class="p">();</span> +<span class="k">exit</span><span class="p">;</span> +</pre></div> +</div> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">Calling this method manually without aborting script execution will result in duplicated output.</p> +</div> +</dd></dl> + +</dd></dl> + +</div> +</div> + + + </div> + <footer> + + <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation"> + + <a href="pagination.html" class="btn btn-neutral float-right" title="Pagination Class">Next <span class="fa fa-arrow-circle-right"></span></a> + + + <a href="migration.html" class="btn btn-neutral" title="Migrations Class"><span class="fa fa-arrow-circle-left"></span> Previous</a> + + </div> + + + <hr/> + + <div role="contentinfo"> + <p> + © Copyright 2014 - 2018, British Columbia Institute of Technology. + Last updated on Jan 13, 2018. + </p> + </div> + + Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/snide/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>. + +</footer> + </div> + </div> + + </section> + + </div> + + + + + + <script type="text/javascript"> + var DOCUMENTATION_OPTIONS = { + URL_ROOT:'../', + VERSION:'3.1.7', + COLLAPSE_INDEX:false, + FILE_SUFFIX:'.html', + HAS_SOURCE: false + }; + </script> + <script type="text/javascript" src="../_static/jquery.js"></script> + <script type="text/javascript" src="../_static/underscore.js"></script> + <script type="text/javascript" src="../_static/doctools.js"></script> + + + + + + <script type="text/javascript" src="../_static/js/theme.js"></script> + + + + + <script type="text/javascript"> + jQuery(function () { + SphinxRtdTheme.StickyNav.enable(); + }); + </script> + + +</body> +</html>
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