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| |
| <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> |
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