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  <div class="section" id="filesystem-helper">
<h1>Filesystem Helper<a class="headerlink" href="#filesystem-helper" title="Permalink to this headline">¶</a></h1>
<p>The Directory Helper file contains functions that assist in working with
directories.</p>
<div class="contents local topic" id="contents">
<ul class="simple">
<li><a class="reference internal" href="#loading-this-helper" id="id1">Loading this Helper</a></li>
<li><a class="reference internal" href="#available-functions" id="id2">Available Functions</a></li>
</ul>
</div>
<div class="section" id="loading-this-helper">
<h2><a class="toc-backref" href="#id1">Loading this Helper</a><a class="headerlink" href="#loading-this-helper" title="Permalink to this headline">¶</a></h2>
<p>This helper is loaded using the following code:</p>
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nx">helper</span><span class="p">(</span><span class="s1">&#39;filesystem&#39;</span><span class="p">);</span>
</pre></div>
</div>
</div>
<div class="section" id="available-functions">
<h2><a class="toc-backref" href="#id2">Available Functions</a><a class="headerlink" href="#available-functions" title="Permalink to this headline">¶</a></h2>
<p>The following functions are available:</p>
<dl class="function">
<dt id="directory_map">
<code class="descname">directory_map</code><span class="sig-paren">(</span><em>$source_dir</em><span class="optional">[</span>, <em>$directory_depth = 0</em><span class="optional">[</span>, <em>$hidden = FALSE</em><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#directory_map" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>$source_dir</strong> (<em>string</em>) – Path to the source directory</li>
<li><strong>$directory_depth</strong> (<em>int</em>) – Depth of directories to traverse (0 = fully recursive, 1 = current dir, etc)</li>
<li><strong>$hidden</strong> (<em>bool</em>) – Whether to include hidden directories</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">An array of files</p>
</td>
</tr>
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">array</p>
</td>
</tr>
</tbody>
</table>
<p>Examples:</p>
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nv">$map</span> <span class="o">=</span> <span class="nx">directory_map</span><span class="p">(</span><span class="s1">&#39;./mydirectory/&#39;</span><span class="p">);</span>
</pre></div>
</div>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">Paths are almost always relative to your main index.php file.</p>
</div>
<p>Sub-folders contained within the directory will be mapped as well. If
you wish to control the recursion depth, you can do so using the second
parameter (integer). A depth of 1 will only map the top level directory:</p>
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nv">$map</span> <span class="o">=</span> <span class="nx">directory_map</span><span class="p">(</span><span class="s1">&#39;./mydirectory/&#39;</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
</pre></div>
</div>
<p>By default, hidden files will not be included in the returned array. To
override this behavior, you may set a third parameter to true (boolean):</p>
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nv">$map</span> <span class="o">=</span> <span class="nx">directory_map</span><span class="p">(</span><span class="s1">&#39;./mydirectory/&#39;</span><span class="p">,</span> <span class="k">FALSE</span><span class="p">,</span> <span class="k">TRUE</span><span class="p">);</span>
</pre></div>
</div>
<p>Each folder name will be an array index, while its contained files will
be numerically indexed. Here is an example of a typical array:</p>
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="k">Array</span> <span class="p">(</span>
    <span class="p">[</span><span class="nx">libraries</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="k">Array</span>
        <span class="p">(</span>
            <span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="nx">benchmark</span><span class="o">.</span><span class="nx">html</span>
            <span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="nx">config</span><span class="o">.</span><span class="nx">html</span>
            <span class="p">[</span><span class="s2">&quot;database/&quot;</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="k">Array</span>
                <span class="p">(</span>
                    <span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="nx">query_builder</span><span class="o">.</span><span class="nx">html</span>
                    <span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="nx">binds</span><span class="o">.</span><span class="nx">html</span>
                    <span class="p">[</span><span class="mi">2</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="nx">configuration</span><span class="o">.</span><span class="nx">html</span>
                    <span class="p">[</span><span class="mi">3</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="nx">connecting</span><span class="o">.</span><span class="nx">html</span>
                    <span class="p">[</span><span class="mi">4</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="nx">examples</span><span class="o">.</span><span class="nx">html</span>
                    <span class="p">[</span><span class="mi">5</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="nx">fields</span><span class="o">.</span><span class="nx">html</span>
                    <span class="p">[</span><span class="mi">6</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="nx">index</span><span class="o">.</span><span class="nx">html</span>
                    <span class="p">[</span><span class="mi">7</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="nx">queries</span><span class="o">.</span><span class="nx">html</span>
                <span class="p">)</span>
            <span class="p">[</span><span class="mi">2</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="nx">email</span><span class="o">.</span><span class="nx">html</span>
            <span class="p">[</span><span class="mi">3</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="nx">file_uploading</span><span class="o">.</span><span class="nx">html</span>
            <span class="p">[</span><span class="mi">4</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="nx">image_lib</span><span class="o">.</span><span class="nx">html</span>
            <span class="p">[</span><span class="mi">5</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="nx">input</span><span class="o">.</span><span class="nx">html</span>
            <span class="p">[</span><span class="mi">6</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="nx">language</span><span class="o">.</span><span class="nx">html</span>
            <span class="p">[</span><span class="mi">7</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="nx">loader</span><span class="o">.</span><span class="nx">html</span>
            <span class="p">[</span><span class="mi">8</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="nx">pagination</span><span class="o">.</span><span class="nx">html</span>
            <span class="p">[</span><span class="mi">9</span><span class="p">]</span> <span class="o">=&gt;</span> <span class="nx">uri</span><span class="o">.</span><span class="nx">html</span>
        <span class="p">)</span>
<span class="p">)</span>
</pre></div>
</div>
<p>If no results are found, this will return an empty array.</p>
</dd></dl>

<dl class="function">
<dt id="write_file">
<code class="descname">write_file</code><span class="sig-paren">(</span><em>$path</em>, <em>$data</em><span class="optional">[</span>, <em>$mode = 'wb'</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#write_file" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>$path</strong> (<em>string</em>) – File path</li>
<li><strong>$data</strong> (<em>string</em>) – Data to write to file</li>
<li><strong>$mode</strong> (<em>string</em>) – <code class="docutils literal notranslate"><span class="pre">fopen()</span></code> mode</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">TRUE if the write was successful, FALSE in case of an error</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>Writes data to the file specified in the path. If the file does not exist then the
function will create it.</p>
<p>Example:</p>
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nv">$data</span> <span class="o">=</span> <span class="s1">&#39;Some file data&#39;</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span> <span class="o">!</span> <span class="nx">write_file</span><span class="p">(</span><span class="s1">&#39;./path/to/file.php&#39;</span><span class="p">,</span> <span class="nv">$data</span><span class="p">))</span>
<span class="p">{</span>
    <span class="k">echo</span> <span class="s1">&#39;Unable to write the file&#39;</span><span class="p">;</span>
<span class="p">}</span>
<span class="k">else</span>
<span class="p">{</span>
    <span class="k">echo</span> <span class="s1">&#39;File written!&#39;</span><span class="p">;</span>
<span class="p">}</span>
</pre></div>
</div>
<p>You can optionally set the write mode via the third parameter:</p>
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nx">write_file</span><span class="p">(</span><span class="s1">&#39;./path/to/file.php&#39;</span><span class="p">,</span> <span class="nv">$data</span><span class="p">,</span> <span class="s1">&#39;r+&#39;</span><span class="p">);</span>
</pre></div>
</div>
<p>The default mode is ‘wb’. Please see the <a class="reference external" href="https://www.php.net/manual/en/function.fopen.php">PHP user guide</a>
for mode options.</p>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">In order for this function to write data to a file, its permissions must
be set such that it is writable. If the file does not already exist,
then the directory containing it must be writable.</p>
</div>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">The path is relative to your main site index.php file, NOT your
controller or view files. CodeIgniter uses a front controller so paths
are always relative to the main site index.</p>
</div>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">This function acquires an exclusive lock on the file while writing to it.</p>
</div>
</dd></dl>

<dl class="function">
<dt id="delete_files">
<code class="descname">delete_files</code><span class="sig-paren">(</span><em>$path</em><span class="optional">[</span>, <em>$delDir = FALSE</em><span class="optional">[</span>, <em>$htdocs = FALSE</em><span class="optional">[</span>, <em>$hidden = FALSE</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#delete_files" 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>$path</strong> (<em>string</em>) – Directory path</li>
<li><strong>$delDir</strong> (<em>bool</em>) – Whether to also delete directories</li>
<li><strong>$htdocs</strong> (<em>bool</em>) – Whether to skip deleting .htaccess and index page files</li>
<li><strong>$hidden</strong> (<em>bool</em>) – Whether to also delete hidden files (files beginning with a period)</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 in case of an error</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>Deletes ALL files contained in the supplied path.</p>
<p>Example:</p>
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nx">delete_files</span><span class="p">(</span><span class="s1">&#39;./path/to/directory/&#39;</span><span class="p">);</span>
</pre></div>
</div>
<p>If the second parameter is set to TRUE, any directories contained within the supplied
root path will be deleted as well.</p>
<p>Example:</p>
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nx">delete_files</span><span class="p">(</span><span class="s1">&#39;./path/to/directory/&#39;</span><span class="p">,</span> <span class="k">TRUE</span><span class="p">);</span>
</pre></div>
</div>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">The files must be writable or owned by the system in order to be deleted.</p>
</div>
</dd></dl>

<dl class="function">
<dt id="get_filenames">
<code class="descname">get_filenames</code><span class="sig-paren">(</span><em>$source_dir</em><span class="optional">[</span>, <em>$include_path = FALSE</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#get_filenames" 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>$source_dir</strong> (<em>string</em>) – Directory path</li>
<li><strong>$include_path</strong> (<em>bool|null</em>) – Whether to include the path as part of the filename; false for no path, null for the path relative to $source_dir, true for the full path</li>
<li><strong>$hidden</strong> (<em>bool</em>) – Whether to include hidden files (files beginning with a period)</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">An array of file names</p>
</td>
</tr>
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">array</p>
</td>
</tr>
</tbody>
</table>
<p>Takes a server path as input and returns an array containing the names of all files
contained within it. The file path can optionally be added to the file names by setting
the second parameter to ‘relative’ for relative paths or any other non-empty value for
a full file path.</p>
<p>Example:</p>
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nv">$controllers</span> <span class="o">=</span> <span class="nx">get_filenames</span><span class="p">(</span><span class="nx">APPPATH</span><span class="o">.</span><span class="s1">&#39;controllers/&#39;</span><span class="p">);</span>
</pre></div>
</div>
</dd></dl>

<dl class="function">
<dt id="get_dir_file_info">
<code class="descname">get_dir_file_info</code><span class="sig-paren">(</span><em>$source_dir</em>, <em>$top_level_only</em><span class="sig-paren">)</span><a class="headerlink" href="#get_dir_file_info" 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>$source_dir</strong> (<em>string</em>) – Directory path</li>
<li><strong>$top_level_only</strong> (<em>bool</em>) – Whether to look only at the specified directory (excluding sub-directories)</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">An array containing info on the supplied directory’s contents</p>
</td>
</tr>
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">array</p>
</td>
</tr>
</tbody>
</table>
<p>Reads the specified directory and builds an array containing the filenames, filesize,
dates, and permissions. Sub-folders contained within the specified path are only read
if forced by sending the second parameter to FALSE, as this can be an intensive
operation.</p>
<p>Example:</p>
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nv">$models_info</span> <span class="o">=</span> <span class="nx">get_dir_file_info</span><span class="p">(</span><span class="nx">APPPATH</span><span class="o">.</span><span class="s1">&#39;models/&#39;</span><span class="p">);</span>
</pre></div>
</div>
</dd></dl>

<dl class="function">
<dt id="get_file_info">
<code class="descname">get_file_info</code><span class="sig-paren">(</span><em>$file[, $returned_values = ['name', 'server_path', 'size', 'date']]</em><span class="sig-paren">)</span><a class="headerlink" href="#get_file_info" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>$file</strong> (<em>string</em>) – File path</li>
<li><strong>$returned_values</strong> (<em>array|string</em>) – What type of info to return to be passed as array or comma separated string</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">An array containing info on the specified file or FALSE on failure</p>
</td>
</tr>
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">array</p>
</td>
</tr>
</tbody>
</table>
<p>Given a file and path, returns (optionally) the <em>name</em>, <em>path</em>, <em>size</em> and <em>date modified</em>
information attributes for a file. Second parameter allows you to explicitly declare what
information you want returned.</p>
<p>Valid <code class="docutils literal notranslate"><span class="pre">$returned_values</span></code> options are: <cite>name</cite>, <cite>size</cite>, <cite>date</cite>, <cite>readable</cite>, <cite>writeable</cite>,
<cite>executable</cite> and <cite>fileperms</cite>.</p>
</dd></dl>

<dl class="function">
<dt id="symbolic_permissions">
<code class="descname">symbolic_permissions</code><span class="sig-paren">(</span><em>$perms</em><span class="sig-paren">)</span><a class="headerlink" href="#symbolic_permissions" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>$perms</strong> (<em>int</em>) – Permissions</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Symbolic permissions string</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>Takes numeric permissions (such as is returned by <code class="docutils literal notranslate"><span class="pre">fileperms()</span></code>) and returns
standard symbolic notation of file permissions.</p>
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="k">echo</span> <span class="nx">symbolic_permissions</span><span class="p">(</span><span class="nb">fileperms</span><span class="p">(</span><span class="s1">&#39;./index.php&#39;</span><span class="p">));</span>  <span class="c1">// -rw-r--r--</span>
</pre></div>
</div>
</dd></dl>

<dl class="function">
<dt id="octal_permissions">
<code class="descname">octal_permissions</code><span class="sig-paren">(</span><em>$perms</em><span class="sig-paren">)</span><a class="headerlink" href="#octal_permissions" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>$perms</strong> (<em>int</em>) – Permissions</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">Octal permissions string</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>Takes numeric permissions (such as is returned by <code class="docutils literal notranslate"><span class="pre">fileperms()</span></code>) and returns
a three character octal notation of file permissions.</p>
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="k">echo</span> <span class="nx">octal_permissions</span><span class="p">(</span><span class="nb">fileperms</span><span class="p">(</span><span class="s1">&#39;./index.php&#39;</span><span class="p">));</span> <span class="c1">// 644</span>
</pre></div>
</div>
</dd></dl>

<dl class="function">
<dt id="set_realpath">
<code class="descname">set_realpath</code><span class="sig-paren">(</span><em>$path</em><span class="optional">[</span>, <em>$check_existence = FALSE</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#set_realpath" 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>$path</strong> (<em>string</em>) – Path</li>
<li><strong>$check_existence</strong> (<em>bool</em>) – Whether to check if the path actually exists</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">An absolute path</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>This function will return a server path without symbolic links or
relative directory structures. An optional second argument will
cause an error to be triggered if the path cannot be resolved.</p>
<p>Examples:</p>
<div class="highlight-html+php notranslate"><div class="highlight"><pre><span></span><span class="nv">$file</span> <span class="o">=</span> <span class="s1">&#39;/etc/php5/apache2/php.ini&#39;</span><span class="p">;</span>
<span class="k">echo</span> <span class="nx">set_realpath</span><span class="p">(</span><span class="nv">$file</span><span class="p">);</span> <span class="c1">// Prints &#39;/etc/php5/apache2/php.ini&#39;</span>

<span class="nv">$non_existent_file</span> <span class="o">=</span> <span class="s1">&#39;/path/to/non-exist-file.txt&#39;</span><span class="p">;</span>
<span class="k">echo</span> <span class="nx">set_realpath</span><span class="p">(</span><span class="nv">$non_existent_file</span><span class="p">,</span> <span class="k">TRUE</span><span class="p">);</span>    <span class="c1">// Shows an error, as the path cannot be resolved</span>
<span class="k">echo</span> <span class="nx">set_realpath</span><span class="p">(</span><span class="nv">$non_existent_file</span><span class="p">,</span> <span class="k">FALSE</span><span class="p">);</span>   <span class="c1">// Prints &#39;/path/to/non-exist-file.txt&#39;</span>

<span class="nv">$directory</span> <span class="o">=</span> <span class="s1">&#39;/etc/php5&#39;</span><span class="p">;</span>
<span class="k">echo</span> <span class="nx">set_realpath</span><span class="p">(</span><span class="nv">$directory</span><span class="p">);</span>  <span class="c1">// Prints &#39;/etc/php5/&#39;</span>

<span class="nv">$non_existent_directory</span> <span class="o">=</span> <span class="s1">&#39;/path/to/nowhere&#39;</span><span class="p">;</span>
<span class="k">echo</span> <span class="nx">set_realpath</span><span class="p">(</span><span class="nv">$non_existent_directory</span><span class="p">,</span> <span class="k">TRUE</span><span class="p">);</span>       <span class="c1">// Shows an error, as the path cannot be resolved</span>
<span class="k">echo</span> <span class="nx">set_realpath</span><span class="p">(</span><span class="nv">$non_existent_directory</span><span class="p">,</span> <span class="k">FALSE</span><span class="p">);</span>      <span class="c1">// Prints &#39;/path/to/nowhere&#39;</span>
</pre></div>
</div>
</dd></dl>

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