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317<li class="toctree-l2"><a class="reference internal" href="encryption.html">Encryption Library</a></li>
318<li class="toctree-l2 current"><a class="current reference internal" href="#">File Uploading Class</a></li>
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344<li class="toctree-l1"><a class="reference internal" href="../database/index.html">Database Reference</a><ul>
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350<li class="toctree-l2"><a class="reference internal" href="../database/helpers.html">Query Helper Functions</a></li>
351<li class="toctree-l2"><a class="reference internal" href="../database/query_builder.html">Query Builder Class</a></li>
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355<li class="toctree-l2"><a class="reference internal" href="../database/caching.html">Query Caching</a></li>
356<li class="toctree-l2"><a class="reference internal" href="../database/forge.html">Database Manipulation with Database Forge</a></li>
357<li class="toctree-l2"><a class="reference internal" href="../database/utilities.html">Database Utilities Class</a></li>
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359</ul>
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363<li class="toctree-l1"><a class="reference internal" href="../helpers/index.html">Helpers</a><ul>
364<li class="toctree-l2"><a class="reference internal" href="../helpers/array_helper.html">Array Helper</a></li>
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388
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391 </div>
392 &nbsp;
393 </nav>
394
395 <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">
396
397
398 <nav class="wy-nav-top" role="navigation" aria-label="top navigation">
399 <i data-toggle="wy-nav-top" class="fa fa-bars"></i>
400 <a href="../index.html">CodeIgniter</a>
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403
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409 <li><a href="../index.html">Docs</a> &raquo;</li>
410
411 <li><a href="index.html">Libraries</a> &raquo;</li>
412
413 <li>File Uploading Class</li>
414 <li class="wy-breadcrumbs-aside">
415
416 </li>
417 <div style="float:right;margin-left:5px;" id="closeMe">
418 <img title="Classic Layout" alt="classic layout" src="data:image/gif;base64,R0lGODlhFAAUAJEAAAAAADMzM////wAAACH5BAUUAAIALAAAAAAUABQAAAImlI+py+0PU5gRBRDM3DxbWoXis42X13USOLauUIqnlsaH/eY6UwAAOw==" />
419 </div>
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421 <hr/>
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423 <div role="main" class="document">
424
425 <div class="section" id="file-uploading-class">
426<h1>File Uploading Class<a class="headerlink" href="#file-uploading-class" title="Permalink to this headline"></a></h1>
427<p>CodeIgniter’s File Uploading Class permits files to be uploaded. You can
428set various preferences, restricting the type and size of the files.</p>
429<div class="contents local topic" id="contents">
430<ul class="simple">
431<li><a class="reference internal" href="#the-process" id="id1">The Process</a><ul>
432<li><a class="reference internal" href="#creating-the-upload-form" id="id2">Creating the Upload Form</a></li>
433<li><a class="reference internal" href="#the-success-page" id="id3">The Success Page</a></li>
434<li><a class="reference internal" href="#the-controller" id="id4">The Controller</a></li>
435<li><a class="reference internal" href="#the-upload-directory" id="id5">The Upload Directory</a></li>
436<li><a class="reference internal" href="#try-it" id="id6">Try it!</a></li>
437</ul>
438</li>
439<li><a class="reference internal" href="#reference-guide" id="id7">Reference Guide</a><ul>
440<li><a class="reference internal" href="#initializing-the-upload-class" id="id8">Initializing the Upload Class</a></li>
441<li><a class="reference internal" href="#setting-preferences" id="id9">Setting Preferences</a></li>
442<li><a class="reference internal" href="#preferences" id="id10">Preferences</a></li>
443<li><a class="reference internal" href="#setting-preferences-in-a-config-file" id="id11">Setting preferences in a config file</a></li>
444</ul>
445</li>
446<li><a class="reference internal" href="#class-reference" id="id12">Class Reference</a></li>
447</ul>
448</div>
449<div class="custom-index container"></div><div class="section" id="the-process">
450<h2><a class="toc-backref" href="#id1">The Process</a><a class="headerlink" href="#the-process" title="Permalink to this headline"></a></h2>
451<p>Uploading a file involves the following general process:</p>
452<ul class="simple">
453<li>An upload form is displayed, allowing a user to select a file and
454upload it.</li>
455<li>When the form is submitted, the file is uploaded to the destination
456you specify.</li>
457<li>Along the way, the file is validated to make sure it is allowed to be
458uploaded based on the preferences you set.</li>
459<li>Once uploaded, the user will be shown a success message.</li>
460</ul>
461<p>To demonstrate this process here is brief tutorial. Afterward you’ll
462find reference information.</p>
463<div class="section" id="creating-the-upload-form">
464<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>
465<p>Using a text editor, create a form called upload_form.php. In it, place
466this code and save it to your <strong>application/views/</strong> directory:</p>
467<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o">&lt;</span><span class="nx">html</span><span class="o">&gt;</span>
468<span class="o">&lt;</span><span class="nx">head</span><span class="o">&gt;</span>
469<span class="o">&lt;</span><span class="nx">title</span><span class="o">&gt;</span><span class="nx">Upload</span> <span class="nx">Form</span><span class="o">&lt;/</span><span class="nx">title</span><span class="o">&gt;</span>
470<span class="o">&lt;/</span><span class="nx">head</span><span class="o">&gt;</span>
471<span class="o">&lt;</span><span class="nx">body</span><span class="o">&gt;</span>
472
473<span class="o">&lt;?</span><span class="nx">php</span> <span class="k">echo</span> <span class="nv">$error</span><span class="p">;</span><span class="cp">?&gt;</span>
474
475<span class="cp">&lt;?php</span> <span class="k">echo</span> <span class="nx">form_open_multipart</span><span class="p">(</span><span class="s1">&#39;upload/do_upload&#39;</span><span class="p">);</span><span class="cp">?&gt;</span>
476
477<span class="p">&lt;</span><span class="nt">input</span> <span class="na">type</span><span class="o">=</span><span class="s">&quot;file&quot;</span> <span class="na">name</span><span class="o">=</span><span class="s">&quot;userfile&quot;</span> <span class="na">size</span><span class="o">=</span><span class="s">&quot;20&quot;</span> <span class="p">/&gt;</span>
478
479<span class="p">&lt;</span><span class="nt">br</span> <span class="p">/&gt;&lt;</span><span class="nt">br</span> <span class="p">/&gt;</span>
480
481<span class="p">&lt;</span><span class="nt">input</span> <span class="na">type</span><span class="o">=</span><span class="s">&quot;submit&quot;</span> <span class="na">value</span><span class="o">=</span><span class="s">&quot;upload&quot;</span> <span class="p">/&gt;</span>
482
483<span class="p">&lt;/</span><span class="nt">form</span><span class="p">&gt;</span>
484
485<span class="p">&lt;/</span><span class="nt">body</span><span class="p">&gt;</span>
486<span class="p">&lt;/</span><span class="nt">html</span><span class="p">&gt;</span>
487</pre></div>
488</div>
489<p>You’ll notice we are using a form helper to create the opening form tag.
490File uploads require a multipart form, so the helper creates the proper
491syntax for you. You’ll also notice we have an $error variable. This is
492so we can show error messages in the event the user does something
493wrong.</p>
494</div>
495<div class="section" id="the-success-page">
496<h3><a class="toc-backref" href="#id3">The Success Page</a><a class="headerlink" href="#the-success-page" title="Permalink to this headline"></a></h3>
497<p>Using a text editor, create a form called upload_success.php. In it,
498place this code and save it to your <strong>application/views/</strong> directory:</p>
499<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o">&lt;</span><span class="nx">html</span><span class="o">&gt;</span>
500<span class="o">&lt;</span><span class="nx">head</span><span class="o">&gt;</span>
501<span class="o">&lt;</span><span class="nx">title</span><span class="o">&gt;</span><span class="nx">Upload</span> <span class="nx">Form</span><span class="o">&lt;/</span><span class="nx">title</span><span class="o">&gt;</span>
502<span class="o">&lt;/</span><span class="nx">head</span><span class="o">&gt;</span>
503<span class="o">&lt;</span><span class="nx">body</span><span class="o">&gt;</span>
504
505<span class="o">&lt;</span><span class="nx">h3</span><span class="o">&gt;</span><span class="nx">Your</span> <span class="nb">file</span> <span class="nx">was</span> <span class="nx">successfully</span> <span class="nx">uploaded</span><span class="o">!&lt;/</span><span class="nx">h3</span><span class="o">&gt;</span>
506
507<span class="o">&lt;</span><span class="nx">ul</span><span class="o">&gt;</span>
508<span class="o">&lt;?</span><span class="nx">php</span> <span class="k">foreach</span> <span class="p">(</span><span class="nv">$upload_data</span> <span class="k">as</span> <span class="nv">$item</span> <span class="o">=&gt;</span> <span class="nv">$value</span><span class="p">)</span><span class="o">:</span><span class="cp">?&gt;</span>
509<span class="p">&lt;</span><span class="nt">li</span><span class="p">&gt;</span><span class="cp">&lt;?php</span> <span class="k">echo</span> <span class="nv">$item</span><span class="p">;</span><span class="cp">?&gt;</span>: <span class="cp">&lt;?php</span> <span class="k">echo</span> <span class="nv">$value</span><span class="p">;</span><span class="cp">?&gt;</span><span class="p">&lt;/</span><span class="nt">li</span><span class="p">&gt;</span>
510<span class="cp">&lt;?php</span> <span class="k">endforeach</span><span class="p">;</span> <span class="cp">?&gt;</span>
511<span class="p">&lt;/</span><span class="nt">ul</span><span class="p">&gt;</span>
512
513<span class="p">&lt;</span><span class="nt">p</span><span class="p">&gt;</span><span class="cp">&lt;?php</span> <span class="k">echo</span> <span class="nx">anchor</span><span class="p">(</span><span class="s1">&#39;upload&#39;</span><span class="p">,</span> <span class="s1">&#39;Upload Another File!&#39;</span><span class="p">);</span> <span class="cp">?&gt;</span><span class="p">&lt;/</span><span class="nt">p</span><span class="p">&gt;</span>
514
515<span class="p">&lt;/</span><span class="nt">body</span><span class="p">&gt;</span>
516<span class="p">&lt;/</span><span class="nt">html</span><span class="p">&gt;</span>
517</pre></div>
518</div>
519</div>
520<div class="section" id="the-controller">
521<h3><a class="toc-backref" href="#id4">The Controller</a><a class="headerlink" href="#the-controller" title="Permalink to this headline"></a></h3>
522<p>Using a text editor, create a controller called Upload.php. In it, place
523this code and save it to your <strong>application/controllers/</strong> directory:</p>
524<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o">&lt;?</span><span class="nx">php</span>
525
526<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>
527
528 <span class="k">public</span> <span class="k">function</span> <span class="nf">__construct</span><span class="p">()</span>
529 <span class="p">{</span>
530 <span class="k">parent</span><span class="o">::</span><span class="na">__construct</span><span class="p">();</span>
531 <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">helper</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">&#39;form&#39;</span><span class="p">,</span> <span class="s1">&#39;url&#39;</span><span class="p">));</span>
532 <span class="p">}</span>
533
534 <span class="k">public</span> <span class="k">function</span> <span class="nf">index</span><span class="p">()</span>
535 <span class="p">{</span>
536 <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">view</span><span class="p">(</span><span class="s1">&#39;upload_form&#39;</span><span class="p">,</span> <span class="k">array</span><span class="p">(</span><span class="s1">&#39;error&#39;</span> <span class="o">=&gt;</span> <span class="s1">&#39; &#39;</span> <span class="p">));</span>
537 <span class="p">}</span>
538
539 <span class="k">public</span> <span class="k">function</span> <span class="nf">do_upload</span><span class="p">()</span>
540 <span class="p">{</span>
541 <span class="nv">$config</span><span class="p">[</span><span class="s1">&#39;upload_path&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s1">&#39;./uploads/&#39;</span><span class="p">;</span>
542 <span class="nv">$config</span><span class="p">[</span><span class="s1">&#39;allowed_types&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s1">&#39;gif|jpg|png&#39;</span><span class="p">;</span>
543 <span class="nv">$config</span><span class="p">[</span><span class="s1">&#39;max_size&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="mi">100</span><span class="p">;</span>
544 <span class="nv">$config</span><span class="p">[</span><span class="s1">&#39;max_width&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="mi">1024</span><span class="p">;</span>
545 <span class="nv">$config</span><span class="p">[</span><span class="s1">&#39;max_height&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="mi">768</span><span class="p">;</span>
546
547 <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">library</span><span class="p">(</span><span class="s1">&#39;upload&#39;</span><span class="p">,</span> <span class="nv">$config</span><span class="p">);</span>
548
549 <span class="k">if</span> <span class="p">(</span> <span class="o">!</span> <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">upload</span><span class="o">-&gt;</span><span class="na">do_upload</span><span class="p">(</span><span class="s1">&#39;userfile&#39;</span><span class="p">))</span>
550 <span class="p">{</span>
551 <span class="nv">$error</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span><span class="s1">&#39;error&#39;</span> <span class="o">=&gt;</span> <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">upload</span><span class="o">-&gt;</span><span class="na">display_errors</span><span class="p">());</span>
552
553 <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">view</span><span class="p">(</span><span class="s1">&#39;upload_form&#39;</span><span class="p">,</span> <span class="nv">$error</span><span class="p">);</span>
554 <span class="p">}</span>
555 <span class="k">else</span>
556 <span class="p">{</span>
557 <span class="nv">$data</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span><span class="s1">&#39;upload_data&#39;</span> <span class="o">=&gt;</span> <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">upload</span><span class="o">-&gt;</span><span class="na">data</span><span class="p">());</span>
558
559 <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">view</span><span class="p">(</span><span class="s1">&#39;upload_success&#39;</span><span class="p">,</span> <span class="nv">$data</span><span class="p">);</span>
560 <span class="p">}</span>
561 <span class="p">}</span>
562<span class="p">}</span>
563<span class="cp">?&gt;</span>
564</pre></div>
565</div>
566</div>
567<div class="section" id="the-upload-directory">
568<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>
569<p>You’ll need a destination directory for your uploaded images. Create a
570directory at the root of your CodeIgniter installation called uploads
571and set its file permissions to 777.</p>
572</div>
573<div class="section" id="try-it">
574<h3><a class="toc-backref" href="#id6">Try it!</a><a class="headerlink" href="#try-it" title="Permalink to this headline"></a></h3>
575<p>To try your form, visit your site using a URL similar to this one:</p>
576<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>
577</pre></div>
578</div>
579<p>You should see an upload form. Try uploading an image file (either a
580jpg, gif, or png). If the path in your controller is correct it should
581work.</p>
582</div>
583</div>
584<div class="section" id="reference-guide">
585<h2><a class="toc-backref" href="#id7">Reference Guide</a><a class="headerlink" href="#reference-guide" title="Permalink to this headline"></a></h2>
586<div class="section" id="initializing-the-upload-class">
587<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>
588<p>Like most other classes in CodeIgniter, the Upload class is initialized
589in your controller using the <code class="docutils literal"><span class="pre">$this-&gt;load-&gt;library()</span></code> method:</p>
590<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">library</span><span class="p">(</span><span class="s1">&#39;upload&#39;</span><span class="p">);</span>
591</pre></div>
592</div>
593<p>Once the Upload class is loaded, the object will be available using:
594$this-&gt;upload</p>
595</div>
596<div class="section" id="setting-preferences">
597<h3><a class="toc-backref" href="#id9">Setting Preferences</a><a class="headerlink" href="#setting-preferences" title="Permalink to this headline"></a></h3>
598<p>Similar to other libraries, you’ll control what is allowed to be upload
599based on your preferences. In the controller you built above you set the
600following preferences:</p>
601<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$config</span><span class="p">[</span><span class="s1">&#39;upload_path&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s1">&#39;./uploads/&#39;</span><span class="p">;</span>
602<span class="nv">$config</span><span class="p">[</span><span class="s1">&#39;allowed_types&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s1">&#39;gif|jpg|png&#39;</span><span class="p">;</span>
603<span class="nv">$config</span><span class="p">[</span><span class="s1">&#39;max_size&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s1">&#39;100&#39;</span><span class="p">;</span>
604<span class="nv">$config</span><span class="p">[</span><span class="s1">&#39;max_width&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s1">&#39;1024&#39;</span><span class="p">;</span>
605<span class="nv">$config</span><span class="p">[</span><span class="s1">&#39;max_height&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s1">&#39;768&#39;</span><span class="p">;</span>
606
607<span class="nv">$this</span><span class="o">-&gt;</span><span class="na">load</span><span class="o">-&gt;</span><span class="na">library</span><span class="p">(</span><span class="s1">&#39;upload&#39;</span><span class="p">,</span> <span class="nv">$config</span><span class="p">);</span>
608
609<span class="c1">// Alternately you can set preferences by calling the ``initialize()`` method. Useful if you auto-load the class:</span>
610<span class="nv">$this</span><span class="o">-&gt;</span><span class="na">upload</span><span class="o">-&gt;</span><span class="na">initialize</span><span class="p">(</span><span class="nv">$config</span><span class="p">);</span>
611</pre></div>
612</div>
613<p>The above preferences should be fairly self-explanatory. Below is a
614table describing all available preferences.</p>
615</div>
616<div class="section" id="preferences">
617<h3><a class="toc-backref" href="#id10">Preferences</a><a class="headerlink" href="#preferences" title="Permalink to this headline"></a></h3>
618<p>The following preferences are available. The default value indicates
619what will be used if you do not specify that preference.</p>
620<table border="1" class="docutils">
621<colgroup>
622<col width="20%" />
623<col width="12%" />
624<col width="16%" />
625<col width="51%" />
626</colgroup>
627<thead valign="bottom">
628<tr class="row-odd"><th class="head">Preference</th>
629<th class="head">Default Value</th>
630<th class="head">Options</th>
631<th class="head">Description</th>
632</tr>
633</thead>
634<tbody valign="top">
635<tr class="row-even"><td><strong>upload_path</strong></td>
636<td>None</td>
637<td>None</td>
638<td>The path to the directory where the upload should be placed. The
639directory must be writable and the path can be absolute or relative.</td>
640</tr>
641<tr class="row-odd"><td><strong>allowed_types</strong></td>
642<td>None</td>
643<td>None</td>
644<td>The mime types corresponding to the types of files you allow to be
645uploaded. Usually the file extension can be used as the mime type.
646Can be either an array or a pipe-separated string.</td>
647</tr>
648<tr class="row-even"><td><strong>file_name</strong></td>
649<td>None</td>
650<td>Desired file name</td>
651<td>If set CodeIgniter will rename the uploaded file to this name. The
652extension provided in the file name must also be an allowed file type.
653If no extension is provided in the original file_name will be used.</td>
654</tr>
655<tr class="row-odd"><td><strong>file_ext_tolower</strong></td>
656<td>FALSE</td>
657<td>TRUE/FALSE (boolean)</td>
658<td>If set to TRUE, the file extension will be forced to lower case</td>
659</tr>
660<tr class="row-even"><td><strong>overwrite</strong></td>
661<td>FALSE</td>
662<td>TRUE/FALSE (boolean)</td>
663<td>If set to true, if a file with the same name as the one you are
664uploading exists, it will be overwritten. If set to false, a number will
665be appended to the filename if another with the same name exists.</td>
666</tr>
667<tr class="row-odd"><td><strong>max_size</strong></td>
668<td>0</td>
669<td>None</td>
670<td>The maximum size (in kilobytes) that the file can be. Set to zero for no
671limit. Note: Most PHP installations have their own limit, as specified
672in the php.ini file. Usually 2 MB (or 2048 KB) by default.</td>
673</tr>
674<tr class="row-even"><td><strong>max_width</strong></td>
675<td>0</td>
676<td>None</td>
677<td>The maximum width (in pixels) that the image can be. Set to zero for no
678limit.</td>
679</tr>
680<tr class="row-odd"><td><strong>max_height</strong></td>
681<td>0</td>
682<td>None</td>
683<td>The maximum height (in pixels) that the image can be. Set to zero for no
684limit.</td>
685</tr>
686<tr class="row-even"><td><strong>min_width</strong></td>
687<td>0</td>
688<td>None</td>
689<td>The minimum width (in pixels) that the image can be. Set to zero for no
690limit.</td>
691</tr>
692<tr class="row-odd"><td><strong>min_height</strong></td>
693<td>0</td>
694<td>None</td>
695<td>The minimum height (in pixels) that the image can be. Set to zero for no
696limit.</td>
697</tr>
698<tr class="row-even"><td><strong>max_filename</strong></td>
699<td>0</td>
700<td>None</td>
701<td>The maximum length that a file name can be. Set to zero for no limit.</td>
702</tr>
703<tr class="row-odd"><td><strong>max_filename_increment</strong></td>
704<td>100</td>
705<td>None</td>
706<td>When overwrite is set to FALSE, use this to set the maximum filename
707increment for CodeIgniter to append to the filename.</td>
708</tr>
709<tr class="row-even"><td><strong>encrypt_name</strong></td>
710<td>FALSE</td>
711<td>TRUE/FALSE (boolean)</td>
712<td>If set to TRUE the file name will be converted to a random encrypted
713string. This can be useful if you would like the file saved with a name
714that can not be discerned by the person uploading it.</td>
715</tr>
716<tr class="row-odd"><td><strong>remove_spaces</strong></td>
717<td>TRUE</td>
718<td>TRUE/FALSE (boolean)</td>
719<td>If set to TRUE, any spaces in the file name will be converted to
720underscores. This is recommended.</td>
721</tr>
722<tr class="row-even"><td><strong>detect_mime</strong></td>
723<td>TRUE</td>
724<td>TRUE/FALSE (boolean)</td>
725<td>If set to TRUE, a server side detection of the file type will be
726performed to avoid code injection attacks. DO NOT disable this option
727unless you have no other option as that would cause a security risk.</td>
728</tr>
729<tr class="row-odd"><td><strong>mod_mime_fix</strong></td>
730<td>TRUE</td>
731<td>TRUE/FALSE (boolean)</td>
732<td>If set to TRUE, multiple filename extensions will be suffixed with an
733underscore 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>.
734DO NOT turn off this option if your upload directory is public, as this
735is a security risk.</td>
736</tr>
737</tbody>
738</table>
739</div>
740<div class="section" id="setting-preferences-in-a-config-file">
741<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>
742<p>If you prefer not to set preferences using the above method, you can
743instead put them into a config file. Simply create a new file called the
744upload.php, add the $config array in that file. Then save the file in:
745<strong>config/upload.php</strong> and it will be used automatically. You will NOT
746need to use the <code class="docutils literal"><span class="pre">$this-&gt;upload-&gt;initialize()</span></code> method if you save your
747preferences in a config file.</p>
748</div>
749</div>
750<div class="section" id="class-reference">
751<h2><a class="toc-backref" href="#id12">Class Reference</a><a class="headerlink" href="#class-reference" title="Permalink to this headline"></a></h2>
752<dl class="class">
753<dt id="CI_Upload">
754<em class="property">class </em><code class="descname">CI_Upload</code><a class="headerlink" href="#CI_Upload" title="Permalink to this definition"></a></dt>
755<dd><dl class="method">
756<dt id="CI_Upload::initialize">
757<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>
758<dd><table class="docutils field-list" frame="void" rules="none">
759<col class="field-name" />
760<col class="field-body" />
761<tbody valign="top">
762<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
763<li><strong>$config</strong> (<em>array</em>) – Preferences</li>
764<li><strong>$reset</strong> (<em>bool</em>) – Whether to reset preferences (that are not provided in $config) to their defaults</li>
765</ul>
766</td>
767</tr>
768<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">CI_Upload instance (method chaining)</p>
769</td>
770</tr>
771<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">CI_Upload</p>
772</td>
773</tr>
774</tbody>
775</table>
776</dd></dl>
777
778<dl class="method">
779<dt id="CI_Upload::do_upload">
780<code class="descname">do_upload</code><span class="sig-paren">(</span><span class="optional">[</span><em>$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>
781<dd><table class="docutils field-list" frame="void" rules="none">
782<col class="field-name" />
783<col class="field-body" />
784<tbody valign="top">
785<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
786<li><strong>$field</strong> (<em>string</em>) – Name of the form field</li>
787</ul>
788</td>
789</tr>
790<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE on success, FALSE on failure</p>
791</td>
792</tr>
793<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p>
794</td>
795</tr>
796</tbody>
797</table>
798<p>Performs the upload based on the preferences you’ve set.</p>
799<div class="admonition note">
800<p class="first admonition-title">Note</p>
801<p class="last">By default the upload routine expects the file to come from
802a form field called userfile, and the form must be of type
803“multipart”.</p>
804</div>
805<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o">&lt;</span><span class="nx">form</span> <span class="nx">method</span><span class="o">=</span><span class="s2">&quot;post&quot;</span> <span class="nx">action</span><span class="o">=</span><span class="s2">&quot;some_action&quot;</span> <span class="nx">enctype</span><span class="o">=</span><span class="s2">&quot;multipart/form-data&quot;</span> <span class="o">/&gt;</span>
806</pre></div>
807</div>
808<p>If you would like to set your own field name simply pass its value to
809the <code class="docutils literal"><span class="pre">do_upload()</span></code> method:</p>
810<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$field_name</span> <span class="o">=</span> <span class="s2">&quot;some_field_name&quot;</span><span class="p">;</span>
811<span class="nv">$this</span><span class="o">-&gt;</span><span class="na">upload</span><span class="o">-&gt;</span><span class="na">do_upload</span><span class="p">(</span><span class="nv">$field_name</span><span class="p">);</span>
812</pre></div>
813</div>
814</dd></dl>
815
816<dl class="method">
817<dt id="CI_Upload::display_errors">
818<code class="descname">display_errors</code><span class="sig-paren">(</span><span class="optional">[</span><em>$open = '&lt;p&gt;'</em><span class="optional">[</span>, <em>$close = '&lt;/p&gt;'</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>
819<dd><table class="docutils field-list" frame="void" rules="none">
820<col class="field-name" />
821<col class="field-body" />
822<tbody valign="top">
823<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
824<li><strong>$open</strong> (<em>string</em>) – Opening markup</li>
825<li><strong>$close</strong> (<em>string</em>) – Closing markup</li>
826</ul>
827</td>
828</tr>
829<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Formatted error message(s)</p>
830</td>
831</tr>
832<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">string</p>
833</td>
834</tr>
835</tbody>
836</table>
837<p>Retrieves any error messages if the <code class="docutils literal"><span class="pre">do_upload()</span></code> method returned
838false. The method does not echo automatically, it returns the data so
839you can assign it however you need.</p>
840<p><strong>Formatting Errors</strong></p>
841<blockquote>
842<div><p>By default the above method wraps any errors within &lt;p&gt; tags. You can
843set your own delimiters like this:</p>
844<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">upload</span><span class="o">-&gt;</span><span class="na">display_errors</span><span class="p">(</span><span class="s1">&#39;&lt;p&gt;&#39;</span><span class="p">,</span> <span class="s1">&#39;&lt;/p&gt;&#39;</span><span class="p">);</span>
845</pre></div>
846</div>
847</div></blockquote>
848</dd></dl>
849
850<dl class="method">
851<dt id="CI_Upload::data">
852<code class="descname">data</code><span class="sig-paren">(</span><span class="optional">[</span><em>$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>
853<dd><table class="docutils field-list" frame="void" rules="none">
854<col class="field-name" />
855<col class="field-body" />
856<tbody valign="top">
857<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
858<li><strong>$data</strong> (<em>string</em>) – Element to return instead of the full array</li>
859</ul>
860</td>
861</tr>
862<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Information about the uploaded file</p>
863</td>
864</tr>
865<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">mixed</p>
866</td>
867</tr>
868</tbody>
869</table>
870<p>This is a helper method that returns an array containing all of the
871data related to the file you uploaded. Here is the array prototype:</p>
872<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="k">Array</span>
873<span class="p">(</span>
874 <span class="p">[</span><span class="nx">file_name</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="nx">mypic</span><span class="o">.</span><span class="nx">jpg</span>
875 <span class="p">[</span><span class="nx">file_type</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="nx">image</span><span class="o">/</span><span class="nx">jpeg</span>
876 <span class="p">[</span><span class="nx">file_path</span><span class="p">]</span> <span class="o">=&gt;</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>
877 <span class="p">[</span><span class="nx">full_path</span><span class="p">]</span> <span class="o">=&gt;</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>
878 <span class="p">[</span><span class="nx">raw_name</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="nx">mypic</span>
879 <span class="p">[</span><span class="nx">orig_name</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="nx">mypic</span><span class="o">.</span><span class="nx">jpg</span>
880 <span class="p">[</span><span class="nx">client_name</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="nx">mypic</span><span class="o">.</span><span class="nx">jpg</span>
881 <span class="p">[</span><span class="nx">file_ext</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="o">.</span><span class="nx">jpg</span>
882 <span class="p">[</span><span class="nx">file_size</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="mf">22.2</span>
883 <span class="p">[</span><span class="nx">is_image</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="mi">1</span>
884 <span class="p">[</span><span class="nx">image_width</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="mi">800</span>
885 <span class="p">[</span><span class="nx">image_height</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="mi">600</span>
886 <span class="p">[</span><span class="nx">image_type</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="nx">jpeg</span>
887 <span class="p">[</span><span class="nx">image_size_str</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="nx">width</span><span class="o">=</span><span class="s2">&quot;800&quot;</span> <span class="nx">height</span><span class="o">=</span><span class="s2">&quot;200&quot;</span>
888<span class="p">)</span>
889</pre></div>
890</div>
891<p>To return one element from the array:</p>
892<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">upload</span><span class="o">-&gt;</span><span class="na">data</span><span class="p">(</span><span class="s1">&#39;file_name&#39;</span><span class="p">);</span> <span class="c1">// Returns: mypic.jpg</span>
893</pre></div>
894</div>
895<p>Here’s a table explaining the above-displayed array items:</p>
896<table border="1" class="docutils">
897<colgroup>
898<col width="14%" />
899<col width="86%" />
900</colgroup>
901<thead valign="bottom">
902<tr class="row-odd"><th class="head">Item</th>
903<th class="head">Description</th>
904</tr>
905</thead>
906<tbody valign="top">
907<tr class="row-even"><td>file_name</td>
908<td>Name of the file that was uploaded, including the filename extension</td>
909</tr>
910<tr class="row-odd"><td>file_type</td>
911<td>File MIME type identifier</td>
912</tr>
913<tr class="row-even"><td>file_path</td>
914<td>Absolute server path to the file</td>
915</tr>
916<tr class="row-odd"><td>full_path</td>
917<td>Absolute server path, including the file name</td>
918</tr>
919<tr class="row-even"><td>raw_name</td>
920<td>File name, without the extension</td>
921</tr>
922<tr class="row-odd"><td>orig_name</td>
923<td>Original file name. This is only useful if you use the encrypted name option.</td>
924</tr>
925<tr class="row-even"><td>client_name</td>
926<td>File name supplied by the client user agent, but possibly sanitized</td>
927</tr>
928<tr class="row-odd"><td>file_ext</td>
929<td>Filename extension, period included</td>
930</tr>
931<tr class="row-even"><td>file_size</td>
932<td>File size in kilobytes</td>
933</tr>
934<tr class="row-odd"><td>is_image</td>
935<td>Whether the file is an image or not. 1 = image. 0 = not.</td>
936</tr>
937<tr class="row-even"><td>image_width</td>
938<td>Image width</td>
939</tr>
940<tr class="row-odd"><td>image_height</td>
941<td>Image height</td>
942</tr>
943<tr class="row-even"><td>image_type</td>
944<td>Image type (usually the file name extension without the period)</td>
945</tr>
946<tr class="row-odd"><td>image_size_str</td>
947<td>A string containing the width and height (useful to put into an image tag)</td>
948</tr>
949</tbody>
950</table>
951</dd></dl>
952
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