function.scandir.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>List files and directories inside the specified path</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="ref.dir.html">Directory Functions</a></div> <div class="next" style="text-align: right; float: right;"><a href="book.fileinfo.html">Fileinfo</a></div> <div class="up"><a href="ref.dir.html">Directory Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.scandir" class="refentry"> <div class="refnamediv"> <h1 class="refname">scandir</h1> <p class="verinfo">(PHP 5)</p><p class="refpurpose"><span class="refname">scandir</span> — <span class="dc-title">List files and directories inside the specified path</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">array</span> <span class="methodname"><b><b>scandir</b></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$directory</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$sorting_order</tt></span> [, <span class="methodparam"><span class="type">resource</span> <tt class="parameter">$context</tt></span> ]] )</div> <p class="para rdfs-comment"> Returns an <a href="language.types.array.html" class="type array">array</a> of files and directories from the <i><tt class="parameter">directory</tt></i>. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">directory</tt></i></span> <dd> <p class="para"> The directory that will be scanned. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">sorting_order</tt></i></span> <dd> <p class="para"> By default, the sorted order is alphabetical in ascending order. If the optional <i><tt class="parameter">sorting_order</tt></i> is used (set to 1), then the sort order is alphabetical in descending order. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">context</tt></i></span> <dd> <p class="para"> For a description of the <i><tt class="parameter">context</tt></i> parameter, refer to <a href="ref.stream.html" class="link">the streams section</a> of the manual. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns an <a href="language.types.array.html" class="type array">array</a> of filenames on success, or <b><tt>FALSE</tt></b> on failure. If <i><tt class="parameter">directory</tt></i> is not a directory, then boolean <b><tt>FALSE</tt></b> is returned, and an error of level <b><tt>E_WARNING</tt></b> is generated. </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 A simple <b>scandir()</b> example</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br />$dir </span><span style="color: #007700">= </span><span style="color: #DD0000">'/tmp'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$files1 </span><span style="color: #007700">= </span><span style="color: #0000BB">scandir</span><span style="color: #007700">(</span><span style="color: #0000BB">$dir</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$files2 </span><span style="color: #007700">= </span><span style="color: #0000BB">scandir</span><span style="color: #007700">(</span><span style="color: #0000BB">$dir</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$files1</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$files2</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> <div class="example-contents"><p>The above example will output something similar to:</p></div> <div class="example-contents"><pre><div class="cdata"><pre>Array( [0] => . [1] => .. [2] => bar.php [3] => foo.txt [4] => somedir)Array( [0] => somedir [1] => foo.txt [2] => bar.php [3] => .. [4] => .)</pre></div> </pre></div> </div> </p> <p class="para"> <div class="example"> <p><b>Example #2 PHP 4 alternatives to <b>scandir()</b></b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br />$dir </span><span style="color: #007700">= </span><span style="color: #DD0000">"/tmp"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$dh </span><span style="color: #007700">= </span><span style="color: #0000BB">opendir</span><span style="color: #007700">(</span><span style="color: #0000BB">$dir</span><span style="color: #007700">);<br />while (</span><span style="color: #0000BB">false </span><span style="color: #007700">!== (</span><span style="color: #0000BB">$filename </span><span style="color: #007700">= </span><span style="color: #0000BB">readdir</span><span style="color: #007700">(</span><span style="color: #0000BB">$dh</span><span style="color: #007700">))) {<br /> </span><span style="color: #0000BB">$files</span><span style="color: #007700">[] = </span><span style="color: #0000BB">$filename</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #0000BB">sort</span><span style="color: #007700">(</span><span style="color: #0000BB">$files</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$files</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">rsort</span><span style="color: #007700">(</span><span style="color: #0000BB">$files</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$files</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">?></span></span></code></div> </div> <div class="example-contents"><p>The above example will output something similar to:</p></div> <div class="example-contents"><pre><div class="cdata"><pre>Array( [0] => . [1] => .. [2] => bar.php [3] => foo.txt [4] => somedir)Array( [0] => somedir [1] => foo.txt [2] => bar.php [3] => .. [4] => .)</pre></div> </pre></div> </div> </p> </div> <div class="refsect1 notes"> <h3 class="title">Notes</h3> <div class="tip"><b class="tip">Tip</b><p class="simpara">A URL can be used as afilename with this function if the <a href="filesystem.configuration.html#ini.allow-url-fopen" class="link">fopen wrappers</a> have been enabled.See <a href="function.fopen.html" class="function">fopen()</a> for more details on how to specifythe filename and <a href="wrappers.html" class="xref">List of Supported Protocols/Wrappers</a> for a list of supportedURL protocols.</p></div> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><a href="function.opendir.html" class="function" rel="rdfs-seeAlso">opendir()</a></li> <li class="member"><a href="function.readdir.html" class="function" rel="rdfs-seeAlso">readdir()</a></li> <li class="member"><a href="function.glob.html" class="function" rel="rdfs-seeAlso">glob()</a></li> <li class="member"><a href="function.is-dir.html" class="function" rel="rdfs-seeAlso">is_dir()</a></li> <li class="member"><a href="function.sort.html" class="function" rel="rdfs-seeAlso">sort()</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="ref.dir.html">Directory Functions</a></div> <div class="next" style="text-align: right; float: right;"><a href="book.fileinfo.html">Fileinfo</a></div> <div class="up"><a href="ref.dir.html">Directory Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 快捷键说明
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