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| author | Andrey Andreev <narf@devilix.net> | 2018-06-12 15:45:46 +0200 |
|---|---|---|
| committer | Andrey Andreev <narf@devilix.net> | 2018-06-12 15:45:46 +0200 |
| commit | 30e2eafa86c4c7b6b39cea3e7089a90df9f603fb (patch) | |
| tree | 391bc1e62d8d0ad045e18a6da72e3e2a59e91503 /user_guide/libraries/file_uploading.html | |
| parent | a9da3dd2f16a8f97d7bc4ff5572b28e4bb84c813 (diff) | |
[ci skip] 3.1.9 release
Diffstat (limited to 'user_guide/libraries/file_uploading.html')
| -rw-r--r-- | user_guide/libraries/file_uploading.html | 1025 |
1 files changed, 1025 insertions, 0 deletions
diff --git a/user_guide/libraries/file_uploading.html b/user_guide/libraries/file_uploading.html new file mode 100644 index 000000000..85cfa9892 --- /dev/null +++ b/user_guide/libraries/file_uploading.html @@ -0,0 +1,1025 @@ + + +<!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>File Uploading Class — CodeIgniter 3.1.9 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 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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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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 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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>File Uploading 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="file-uploading-class"> +<h1>File Uploading Class<a class="headerlink" href="#file-uploading-class" title="Permalink to this headline">¶</a></h1> +<p>CodeIgniter’s File Uploading Class permits files to be uploaded. You can +set various preferences, restricting the type and size of the files.</p> +<div class="contents local topic" id="contents"> +<ul class="simple"> +<li><a class="reference internal" href="#the-process" id="id1">The Process</a><ul> +<li><a class="reference internal" href="#creating-the-upload-form" id="id2">Creating the Upload Form</a></li> +<li><a class="reference internal" href="#the-success-page" id="id3">The Success Page</a></li> +<li><a class="reference internal" href="#the-controller" id="id4">The Controller</a></li> +<li><a class="reference internal" href="#the-upload-directory" id="id5">The Upload Directory</a></li> +<li><a class="reference internal" href="#try-it" id="id6">Try it!</a></li> +</ul> +</li> +<li><a class="reference internal" href="#reference-guide" id="id7">Reference Guide</a><ul> +<li><a class="reference internal" href="#initializing-the-upload-class" id="id8">Initializing the Upload Class</a></li> +<li><a class="reference internal" href="#setting-preferences" id="id9">Setting Preferences</a></li> +<li><a class="reference internal" href="#preferences" id="id10">Preferences</a></li> +<li><a class="reference internal" href="#setting-preferences-in-a-config-file" id="id11">Setting preferences in a config file</a></li> +</ul> +</li> +<li><a class="reference internal" href="#class-reference" id="id12">Class Reference</a></li> +</ul> +</div> +<div class="custom-index container"></div><div class="section" id="the-process"> +<h2><a class="toc-backref" href="#id1">The Process</a><a class="headerlink" href="#the-process" title="Permalink to this headline">¶</a></h2> +<p>Uploading a file involves the following general process:</p> +<ul class="simple"> +<li>An upload form is displayed, allowing a user to select a file and +upload it.</li> +<li>When the form is submitted, the file is uploaded to the destination +you specify.</li> +<li>Along the way, the file is validated to make sure it is allowed to be +uploaded based on the preferences you set.</li> +<li>Once uploaded, the user will be shown a success message.</li> +</ul> +<p>To demonstrate this process here is brief tutorial. Afterward you’ll +find reference information.</p> +<div class="section" id="creating-the-upload-form"> +<h3><a class="toc-backref" href="#id2">Creating the Upload Form</a><a class="headerlink" href="#creating-the-upload-form" title="Permalink to this headline">¶</a></h3> +<p>Using a text editor, create a form called upload_form.php. In it, place +this code and save it to your <strong>application/views/</strong> directory:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o"><</span><span class="nx">html</span><span class="o">></span> +<span class="o"><</span><span class="nx">head</span><span class="o">></span> +<span class="o"><</span><span class="nx">title</span><span class="o">></span><span class="nx">Upload</span> <span class="nx">Form</span><span class="o"></</span><span class="nx">title</span><span class="o">></span> +<span class="o"></</span><span class="nx">head</span><span class="o">></span> +<span class="o"><</span><span class="nx">body</span><span class="o">></span> + +<span class="o"><?</span><span class="nx">php</span> <span class="k">echo</span> <span class="nv">$error</span><span class="p">;</span><span class="cp">?></span> + +<span class="cp"><?php</span> <span class="k">echo</span> <span class="nx">form_open_multipart</span><span class="p">(</span><span class="s1">'upload/do_upload'</span><span class="p">);</span><span class="cp">?></span> + +<span class="p"><</span><span class="nt">input</span> <span class="na">type</span><span class="o">=</span><span class="s">"file"</span> <span class="na">name</span><span class="o">=</span><span class="s">"userfile"</span> <span class="na">size</span><span class="o">=</span><span class="s">"20"</span> <span class="p">/></span> + +<span class="p"><</span><span class="nt">br</span> <span class="p">/><</span><span class="nt">br</span> <span class="p">/></span> + +<span class="p"><</span><span class="nt">input</span> <span class="na">type</span><span class="o">=</span><span class="s">"submit"</span> <span class="na">value</span><span class="o">=</span><span class="s">"upload"</span> <span class="p">/></span> + +<span class="p"></</span><span class="nt">form</span><span class="p">></span> + +<span class="p"></</span><span class="nt">body</span><span class="p">></span> +<span class="p"></</span><span class="nt">html</span><span class="p">></span> +</pre></div> +</div> +<p>You’ll notice we are using a form helper to create the opening form tag. +File uploads require a multipart form, so the helper creates the proper +syntax for you. You’ll also notice we have an $error variable. This is +so we can show error messages in the event the user does something +wrong.</p> +</div> +<div class="section" id="the-success-page"> +<h3><a class="toc-backref" href="#id3">The Success Page</a><a class="headerlink" href="#the-success-page" title="Permalink to this headline">¶</a></h3> +<p>Using a text editor, create a form called upload_success.php. In it, +place this code and save it to your <strong>application/views/</strong> directory:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o"><</span><span class="nx">html</span><span class="o">></span> +<span class="o"><</span><span class="nx">head</span><span class="o">></span> +<span class="o"><</span><span class="nx">title</span><span class="o">></span><span class="nx">Upload</span> <span class="nx">Form</span><span class="o"></</span><span class="nx">title</span><span class="o">></span> +<span class="o"></</span><span class="nx">head</span><span class="o">></span> +<span class="o"><</span><span class="nx">body</span><span class="o">></span> + +<span class="o"><</span><span class="nx">h3</span><span class="o">></span><span class="nx">Your</span> <span class="nb">file</span> <span class="nx">was</span> <span class="nx">successfully</span> <span class="nx">uploaded</span><span class="o">!</</span><span class="nx">h3</span><span class="o">></span> + +<span class="o"><</span><span class="nx">ul</span><span class="o">></span> +<span class="o"><?</span><span class="nx">php</span> <span class="k">foreach</span> <span class="p">(</span><span class="nv">$upload_data</span> <span class="k">as</span> <span class="nv">$item</span> <span class="o">=></span> <span class="nv">$value</span><span class="p">)</span><span class="o">:</span><span class="cp">?></span> +<span class="p"><</span><span class="nt">li</span><span class="p">></span><span class="cp"><?php</span> <span class="k">echo</span> <span class="nv">$item</span><span class="p">;</span><span class="cp">?></span>: <span class="cp"><?php</span> <span class="k">echo</span> <span class="nv">$value</span><span class="p">;</span><span class="cp">?></span><span class="p"></</span><span class="nt">li</span><span class="p">></span> +<span class="cp"><?php</span> <span class="k">endforeach</span><span class="p">;</span> <span class="cp">?></span> +<span class="p"></</span><span class="nt">ul</span><span class="p">></span> + +<span class="p"><</span><span class="nt">p</span><span class="p">></span><span class="cp"><?php</span> <span class="k">echo</span> <span class="nx">anchor</span><span class="p">(</span><span class="s1">'upload'</span><span class="p">,</span> <span class="s1">'Upload Another File!'</span><span class="p">);</span> <span class="cp">?></span><span class="p"></</span><span class="nt">p</span><span class="p">></span> + +<span class="p"></</span><span class="nt">body</span><span class="p">></span> +<span class="p"></</span><span class="nt">html</span><span class="p">></span> +</pre></div> +</div> +</div> +<div class="section" id="the-controller"> +<h3><a class="toc-backref" href="#id4">The Controller</a><a class="headerlink" href="#the-controller" title="Permalink to this headline">¶</a></h3> +<p>Using a text editor, create a controller called Upload.php. In it, place +this code and save it to your <strong>application/controllers/</strong> directory:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o"><?</span><span class="nx">php</span> + +<span class="k">class</span> <span class="nc">Upload</span> <span class="k">extends</span> <span class="nx">CI_Controller</span> <span class="p">{</span> + + <span class="k">public</span> <span class="k">function</span> <span class="nf">__construct</span><span class="p">()</span> + <span class="p">{</span> + <span class="k">parent</span><span class="o">::</span><span class="na">__construct</span><span class="p">();</span> + <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">helper</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">'form'</span><span class="p">,</span> <span class="s1">'url'</span><span class="p">));</span> + <span class="p">}</span> + + <span class="k">public</span> <span class="k">function</span> <span class="nf">index</span><span class="p">()</span> + <span class="p">{</span> + <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">view</span><span class="p">(</span><span class="s1">'upload_form'</span><span class="p">,</span> <span class="k">array</span><span class="p">(</span><span class="s1">'error'</span> <span class="o">=></span> <span class="s1">' '</span> <span class="p">));</span> + <span class="p">}</span> + + <span class="k">public</span> <span class="k">function</span> <span class="nf">do_upload</span><span class="p">()</span> + <span class="p">{</span> + <span class="nv">$config</span><span class="p">[</span><span class="s1">'upload_path'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'./uploads/'</span><span class="p">;</span> + <span class="nv">$config</span><span class="p">[</span><span class="s1">'allowed_types'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'gif|jpg|png'</span><span class="p">;</span> + <span class="nv">$config</span><span class="p">[</span><span class="s1">'max_size'</span><span class="p">]</span> <span class="o">=</span> <span class="mi">100</span><span class="p">;</span> + <span class="nv">$config</span><span class="p">[</span><span class="s1">'max_width'</span><span class="p">]</span> <span class="o">=</span> <span class="mi">1024</span><span class="p">;</span> + <span class="nv">$config</span><span class="p">[</span><span class="s1">'max_height'</span><span class="p">]</span> <span class="o">=</span> <span class="mi">768</span><span class="p">;</span> + + <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">library</span><span class="p">(</span><span class="s1">'upload'</span><span class="p">,</span> <span class="nv">$config</span><span class="p">);</span> + + <span class="k">if</span> <span class="p">(</span> <span class="o">!</span> <span class="nv">$this</span><span class="o">-></span><span class="na">upload</span><span class="o">-></span><span class="na">do_upload</span><span class="p">(</span><span class="s1">'userfile'</span><span class="p">))</span> + <span class="p">{</span> + <span class="nv">$error</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span><span class="s1">'error'</span> <span class="o">=></span> <span class="nv">$this</span><span class="o">-></span><span class="na">upload</span><span class="o">-></span><span class="na">display_errors</span><span class="p">());</span> + + <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">view</span><span class="p">(</span><span class="s1">'upload_form'</span><span class="p">,</span> <span class="nv">$error</span><span class="p">);</span> + <span class="p">}</span> + <span class="k">else</span> + <span class="p">{</span> + <span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span><span class="s1">'upload_data'</span> <span class="o">=></span> <span class="nv">$this</span><span class="o">-></span><span class="na">upload</span><span class="o">-></span><span class="na">data</span><span class="p">());</span> + + <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">view</span><span class="p">(</span><span class="s1">'upload_success'</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span> + <span class="p">}</span> + <span class="p">}</span> +<span class="p">}</span> +<span class="cp">?></span> +</pre></div> +</div> +</div> +<div class="section" id="the-upload-directory"> +<h3><a class="toc-backref" href="#id5">The Upload Directory</a><a class="headerlink" href="#the-upload-directory" title="Permalink to this headline">¶</a></h3> +<p>You’ll need a destination directory for your uploaded images. Create a +directory at the root of your CodeIgniter installation called uploads +and set its file permissions to 777.</p> +</div> +<div class="section" id="try-it"> +<h3><a class="toc-backref" href="#id6">Try it!</a><a class="headerlink" href="#try-it" title="Permalink to this headline">¶</a></h3> +<p>To try your form, visit your site using a URL similar to this one:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nx">example</span><span class="o">.</span><span class="nx">com</span><span class="o">/</span><span class="nx">index</span><span class="o">.</span><span class="nx">php</span><span class="o">/</span><span class="nx">upload</span><span class="o">/</span> +</pre></div> +</div> +<p>You should see an upload form. Try uploading an image file (either a +jpg, gif, or png). If the path in your controller is correct it should +work.</p> +</div> +</div> +<div class="section" id="reference-guide"> +<h2><a class="toc-backref" href="#id7">Reference Guide</a><a class="headerlink" href="#reference-guide" title="Permalink to this headline">¶</a></h2> +<div class="section" id="initializing-the-upload-class"> +<h3><a class="toc-backref" href="#id8">Initializing the Upload Class</a><a class="headerlink" href="#initializing-the-upload-class" title="Permalink to this headline">¶</a></h3> +<p>Like most other classes in CodeIgniter, the Upload class is initialized +in your controller using the <code class="docutils literal"><span class="pre">$this->load->library()</span></code> method:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">library</span><span class="p">(</span><span class="s1">'upload'</span><span class="p">);</span> +</pre></div> +</div> +<p>Once the Upload class is loaded, the object will be available using: +$this->upload</p> +</div> +<div class="section" id="setting-preferences"> +<h3><a class="toc-backref" href="#id9">Setting Preferences</a><a class="headerlink" href="#setting-preferences" title="Permalink to this headline">¶</a></h3> +<p>Similar to other libraries, you’ll control what is allowed to be upload +based on your preferences. In the controller you built above you set the +following preferences:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$config</span><span class="p">[</span><span class="s1">'upload_path'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'./uploads/'</span><span class="p">;</span> +<span class="nv">$config</span><span class="p">[</span><span class="s1">'allowed_types'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'gif|jpg|png'</span><span class="p">;</span> +<span class="nv">$config</span><span class="p">[</span><span class="s1">'max_size'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'100'</span><span class="p">;</span> +<span class="nv">$config</span><span class="p">[</span><span class="s1">'max_width'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'1024'</span><span class="p">;</span> +<span class="nv">$config</span><span class="p">[</span><span class="s1">'max_height'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'768'</span><span class="p">;</span> + +<span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">library</span><span class="p">(</span><span class="s1">'upload'</span><span class="p">,</span> <span class="nv">$config</span><span class="p">);</span> + +<span class="c1">// Alternately you can set preferences by calling the ``initialize()`` method. Useful if you auto-load the class:</span> +<span class="nv">$this</span><span class="o">-></span><span class="na">upload</span><span class="o">-></span><span class="na">initialize</span><span class="p">(</span><span class="nv">$config</span><span class="p">);</span> +</pre></div> +</div> +<p>The above preferences should be fairly self-explanatory. Below is a +table describing all available preferences.</p> +</div> +<div class="section" id="preferences"> +<h3><a class="toc-backref" href="#id10">Preferences</a><a class="headerlink" href="#preferences" title="Permalink to this headline">¶</a></h3> +<p>The following preferences are available. The default value indicates +what will be used if you do not specify that preference.</p> +<table border="1" class="docutils"> +<colgroup> +<col width="20%" /> +<col width="12%" /> +<col width="16%" /> +<col width="51%" /> +</colgroup> +<thead valign="bottom"> +<tr class="row-odd"><th class="head">Preference</th> +<th class="head">Default Value</th> +<th class="head">Options</th> +<th class="head">Description</th> +</tr> +</thead> +<tbody valign="top"> +<tr class="row-even"><td><strong>upload_path</strong></td> +<td>None</td> +<td>None</td> +<td>The path to the directory where the upload should be placed. The +directory must be writable and the path can be absolute or relative.</td> +</tr> +<tr class="row-odd"><td><strong>allowed_types</strong></td> +<td>None</td> +<td>None</td> +<td>The mime types corresponding to the types of files you allow to be +uploaded. Usually the file extension can be used as the mime type. +Can be either an array or a pipe-separated string.</td> +</tr> +<tr class="row-even"><td><strong>file_name</strong></td> +<td>None</td> +<td>Desired file name</td> +<td>If set CodeIgniter will rename the uploaded file to this name. The +extension provided in the file name must also be an allowed file type. +If no extension is provided in the original file_name will be used.</td> +</tr> +<tr class="row-odd"><td><strong>file_ext_tolower</strong></td> +<td>FALSE</td> +<td>TRUE/FALSE (boolean)</td> +<td>If set to TRUE, the file extension will be forced to lower case</td> +</tr> +<tr class="row-even"><td><strong>overwrite</strong></td> +<td>FALSE</td> +<td>TRUE/FALSE (boolean)</td> +<td>If set to true, if a file with the same name as the one you are +uploading exists, it will be overwritten. If set to false, a number will +be appended to the filename if another with the same name exists.</td> +</tr> +<tr class="row-odd"><td><strong>max_size</strong></td> +<td>0</td> +<td>None</td> +<td>The maximum size (in kilobytes) that the file can be. Set to zero for no +limit. Note: Most PHP installations have their own limit, as specified +in the php.ini file. Usually 2 MB (or 2048 KB) by default.</td> +</tr> +<tr class="row-even"><td><strong>max_width</strong></td> +<td>0</td> +<td>None</td> +<td>The maximum width (in pixels) that the image can be. Set to zero for no +limit.</td> +</tr> +<tr class="row-odd"><td><strong>max_height</strong></td> +<td>0</td> +<td>None</td> +<td>The maximum height (in pixels) that the image can be. Set to zero for no +limit.</td> +</tr> +<tr class="row-even"><td><strong>min_width</strong></td> +<td>0</td> +<td>None</td> +<td>The minimum width (in pixels) that the image can be. Set to zero for no +limit.</td> +</tr> +<tr class="row-odd"><td><strong>min_height</strong></td> +<td>0</td> +<td>None</td> +<td>The minimum height (in pixels) that the image can be. Set to zero for no +limit.</td> +</tr> +<tr class="row-even"><td><strong>max_filename</strong></td> +<td>0</td> +<td>None</td> +<td>The maximum length that a file name can be. Set to zero for no limit.</td> +</tr> +<tr class="row-odd"><td><strong>max_filename_increment</strong></td> +<td>100</td> +<td>None</td> +<td>When overwrite is set to FALSE, use this to set the maximum filename +increment for CodeIgniter to append to the filename.</td> +</tr> +<tr class="row-even"><td><strong>encrypt_name</strong></td> +<td>FALSE</td> +<td>TRUE/FALSE (boolean)</td> +<td>If set to TRUE the file name will be converted to a random encrypted +string. This can be useful if you would like the file saved with a name +that can not be discerned by the person uploading it.</td> +</tr> +<tr class="row-odd"><td><strong>remove_spaces</strong></td> +<td>TRUE</td> +<td>TRUE/FALSE (boolean)</td> +<td>If set to TRUE, any spaces in the file name will be converted to +underscores. This is recommended.</td> +</tr> +<tr class="row-even"><td><strong>detect_mime</strong></td> +<td>TRUE</td> +<td>TRUE/FALSE (boolean)</td> +<td>If set to TRUE, a server side detection of the file type will be +performed to avoid code injection attacks. DO NOT disable this option +unless you have no other option as that would cause a security risk.</td> +</tr> +<tr class="row-odd"><td><strong>mod_mime_fix</strong></td> +<td>TRUE</td> +<td>TRUE/FALSE (boolean)</td> +<td>If set to TRUE, multiple filename extensions will be suffixed with an +underscore in order to avoid triggering <a class="reference external" href="http://httpd.apache.org/docs/2.0/mod/mod_mime.html#multipleext">Apache mod_mime</a>. +DO NOT turn off this option if your upload directory is public, as this +is a security risk.</td> +</tr> +</tbody> +</table> +</div> +<div class="section" id="setting-preferences-in-a-config-file"> +<h3><a class="toc-backref" href="#id11">Setting preferences in a config file</a><a class="headerlink" href="#setting-preferences-in-a-config-file" title="Permalink to this headline">¶</a></h3> +<p>If you prefer not to set preferences using the above method, you can +instead put them into a config file. Simply create a new file called the +upload.php, add the $config array in that file. Then save the file in: +<strong>config/upload.php</strong> and it will be used automatically. You will NOT +need to use the <code class="docutils literal"><span class="pre">$this->upload->initialize()</span></code> method if you save your +preferences in a config file.</p> +</div> +</div> +<div class="section" id="class-reference"> +<h2><a class="toc-backref" href="#id12">Class Reference</a><a class="headerlink" href="#class-reference" title="Permalink to this headline">¶</a></h2> +<dl class="class"> +<dt id="CI_Upload"> +<em class="property">class </em><code class="descname">CI_Upload</code><a class="headerlink" href="#CI_Upload" title="Permalink to this definition">¶</a></dt> +<dd><dl class="method"> +<dt id="CI_Upload::initialize"> +<code class="descname">initialize</code><span class="sig-paren">(</span><span class="optional">[</span><em>array $config = array()</em><span class="optional">[</span>, <em>$reset = TRUE</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Upload::initialize" 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>$config</strong> (<em>array</em>) – Preferences</li> +<li><strong>$reset</strong> (<em>bool</em>) – Whether to reset preferences (that are not provided in $config) to their defaults</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_Upload instance (method chaining)</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_Upload</p> +</td> +</tr> +</tbody> +</table> +</dd></dl> + +<dl class="method"> +<dt id="CI_Upload::do_upload"> +<code class="descname">do_upload</code><span class="sig-paren">(</span><span class="optional">[</span><em>$field = 'userfile'</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Upload::do_upload" 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>$field</strong> (<em>string</em>) – Name of the form field</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE on success, FALSE on failure</p> +</td> +</tr> +<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p> +</td> +</tr> +</tbody> +</table> +<p>Performs the upload based on the preferences you’ve set.</p> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">By default the upload routine expects the file to come from +a form field called userfile, and the form must be of type +“multipart”.</p> +</div> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o"><</span><span class="nx">form</span> <span class="nx">method</span><span class="o">=</span><span class="s2">"post"</span> <span class="nx">action</span><span class="o">=</span><span class="s2">"some_action"</span> <span class="nx">enctype</span><span class="o">=</span><span class="s2">"multipart/form-data"</span> <span class="o">/></span> +</pre></div> +</div> +<p>If you would like to set your own field name simply pass its value to +the <code class="docutils literal"><span class="pre">do_upload()</span></code> method:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$field_name</span> <span class="o">=</span> <span class="s2">"some_field_name"</span><span class="p">;</span> +<span class="nv">$this</span><span class="o">-></span><span class="na">upload</span><span class="o">-></span><span class="na">do_upload</span><span class="p">(</span><span class="nv">$field_name</span><span class="p">);</span> +</pre></div> +</div> +</dd></dl> + +<dl class="method"> +<dt id="CI_Upload::display_errors"> +<code class="descname">display_errors</code><span class="sig-paren">(</span><span class="optional">[</span><em>$open = '<p>'</em><span class="optional">[</span>, <em>$close = '</p>'</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Upload::display_errors" 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>$open</strong> (<em>string</em>) – Opening markup</li> +<li><strong>$close</strong> (<em>string</em>) – Closing markup</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Formatted error message(s)</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>Retrieves any error messages if the <code class="docutils literal"><span class="pre">do_upload()</span></code> method returned +false. The method does not echo automatically, it returns the data so +you can assign it however you need.</p> +<p><strong>Formatting Errors</strong></p> +<blockquote> +<div><p>By default the above method wraps any errors within <p> tags. You can +set your own delimiters like this:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">upload</span><span class="o">-></span><span class="na">display_errors</span><span class="p">(</span><span class="s1">'<p>'</span><span class="p">,</span> <span class="s1">'</p>'</span><span class="p">);</span> +</pre></div> +</div> +</div></blockquote> +</dd></dl> + +<dl class="method"> +<dt id="CI_Upload::data"> +<code class="descname">data</code><span class="sig-paren">(</span><span class="optional">[</span><em>$index = NULL</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#CI_Upload::data" 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>$data</strong> (<em>string</em>) – Element to return instead of the full array</li> +</ul> +</td> +</tr> +<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Information about the uploaded file</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 is a helper method that returns an array containing all of the +data related to the file you uploaded. Here is the array prototype:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">Array</span> +<span class="p">(</span> + <span class="p">[</span><span class="nx">file_name</span><span class="p">]</span> <span class="o">=></span> <span class="nx">mypic</span><span class="o">.</span><span class="nx">jpg</span> + <span class="p">[</span><span class="nx">file_type</span><span class="p">]</span> <span class="o">=></span> <span class="nx">image</span><span class="o">/</span><span class="nx">jpeg</span> + <span class="p">[</span><span class="nx">file_path</span><span class="p">]</span> <span class="o">=></span> <span class="o">/</span><span class="nx">path</span><span class="o">/</span><span class="nx">to</span><span class="o">/</span><span class="nx">your</span><span class="o">/</span><span class="nx">upload</span><span class="o">/</span> + <span class="p">[</span><span class="nx">full_path</span><span class="p">]</span> <span class="o">=></span> <span class="o">/</span><span class="nx">path</span><span class="o">/</span><span class="nx">to</span><span class="o">/</span><span class="nx">your</span><span class="o">/</span><span class="nx">upload</span><span class="o">/</span><span class="nx">jpg</span><span class="o">.</span><span class="nx">jpg</span> + <span class="p">[</span><span class="nx">raw_name</span><span class="p">]</span> <span class="o">=></span> <span class="nx">mypic</span> + <span class="p">[</span><span class="nx">orig_name</span><span class="p">]</span> <span class="o">=></span> <span class="nx">mypic</span><span class="o">.</span><span class="nx">jpg</span> + <span class="p">[</span><span class="nx">client_name</span><span class="p">]</span> <span class="o">=></span> <span class="nx">mypic</span><span class="o">.</span><span class="nx">jpg</span> + <span class="p">[</span><span class="nx">file_ext</span><span class="p">]</span> <span class="o">=></span> <span class="o">.</span><span class="nx">jpg</span> + <span class="p">[</span><span class="nx">file_size</span><span class="p">]</span> <span class="o">=></span> <span class="mf">22.2</span> + <span class="p">[</span><span class="nx">is_image</span><span class="p">]</span> <span class="o">=></span> <span class="mi">1</span> + <span class="p">[</span><span class="nx">image_width</span><span class="p">]</span> <span class="o">=></span> <span class="mi">800</span> + <span class="p">[</span><span class="nx">image_height</span><span class="p">]</span> <span class="o">=></span> <span class="mi">600</span> + <span class="p">[</span><span class="nx">image_type</span><span class="p">]</span> <span class="o">=></span> <span class="nx">jpeg</span> + <span class="p">[</span><span class="nx">image_size_str</span><span class="p">]</span> <span class="o">=></span> <span class="nx">width</span><span class="o">=</span><span class="s2">"800"</span> <span class="nx">height</span><span class="o">=</span><span class="s2">"200"</span> +<span class="p">)</span> +</pre></div> +</div> +<p>To return one element from the array:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">upload</span><span class="o">-></span><span class="na">data</span><span class="p">(</span><span class="s1">'file_name'</span><span class="p">);</span> <span class="c1">// Returns: mypic.jpg</span> +</pre></div> +</div> +<p>Here’s a table explaining the above-displayed array items:</p> +<table border="1" class="docutils"> +<colgroup> +<col width="14%" /> +<col width="86%" /> +</colgroup> +<thead valign="bottom"> +<tr class="row-odd"><th class="head">Item</th> +<th class="head">Description</th> +</tr> +</thead> +<tbody valign="top"> +<tr class="row-even"><td>file_name</td> +<td>Name of the file that was uploaded, including the filename extension</td> +</tr> +<tr class="row-odd"><td>file_type</td> +<td>File MIME type identifier</td> +</tr> +<tr class="row-even"><td>file_path</td> +<td>Absolute server path to the file</td> +</tr> +<tr class="row-odd"><td>full_path</td> +<td>Absolute server path, including the file name</td> +</tr> +<tr class="row-even"><td>raw_name</td> +<td>File name, without the extension</td> +</tr> +<tr class="row-odd"><td>orig_name</td> +<td>Original file name. This is only useful if you use the encrypted name option.</td> +</tr> +<tr class="row-even"><td>client_name</td> +<td>File name supplied by the client user agent, but possibly sanitized</td> +</tr> +<tr class="row-odd"><td>file_ext</td> +<td>Filename extension, period included</td> +</tr> +<tr class="row-even"><td>file_size</td> +<td>File size in kilobytes</td> +</tr> +<tr class="row-odd"><td>is_image</td> +<td>Whether the file is an image or not. 1 = image. 0 = not.</td> +</tr> +<tr class="row-even"><td>image_width</td> +<td>Image width</td> +</tr> +<tr class="row-odd"><td>image_height</td> +<td>Image height</td> +</tr> +<tr class="row-even"><td>image_type</td> +<td>Image type (usually the file name extension without the period)</td> +</tr> +<tr class="row-odd"><td>image_size_str</td> +<td>A string containing the width and height (useful to put into an image tag)</td> +</tr> +</tbody> +</table> +</dd></dl> + +</dd></dl> + +</div> +</div> + + + </div> + <footer> + + <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation"> + + <a href="form_validation.html" class="btn btn-neutral float-right" title="Form Validation">Next <span class="fa fa-arrow-circle-right"></span></a> + + + <a href="encryption.html" class="btn btn-neutral" title="Encryption Library"><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 Jun 12, 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:'3.1.9', + 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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