function.unlink.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>Deletes a file</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.filesystem.html">Filesystem Functions</a></div> <div class="next" style="text-align: right; float: right;"><a href="book.mime-magic.html">Mimetype</a></div> <div class="up"><a href="ref.filesystem.html">Filesystem Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.unlink" class="refentry"> <div class="refnamediv"> <h1 class="refname">unlink</h1> <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">unlink</span> — <span class="dc-title">Deletes a file</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><b>unlink</b></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$filename</tt></span> [, <span class="methodparam"><span class="type">resource</span> <tt class="parameter">$context</tt></span> ] )</div> <p class="para rdfs-comment"> Deletes <i><tt class="parameter">filename</tt></i>. Similar to the Unix C unlink() function. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">filename</tt></i></span> <dd> <p class="para"> Path to the file. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">context</tt></i></span> <dd> <blockquote><p><b class="note">Note</b>: <span class="simpara">Context support was addedwith PHP 5.0.0. For a description of <i>contexts</i>, refer to<a href="ref.stream.html" class="xref">Stream Functions</a>.</span></p></blockquote> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns <b><tt>TRUE</tt></b> on success or <b><tt>FALSE</tt></b> on failure. </p> </div> <div class="refsect1 changelog"> <h3 class="title">ChangeLog</h3> <p class="para"> <table class="informaltable"> <colgroup> <thead valign="middle"> <tr valign="middle"> <th colspan="1">Version</th> <th colspan="1">Description</th> </tr> </thead> <tbody valign="middle" class="tbody"> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">5.0.0</td> <td colspan="1" rowspan="1" align="left"> As of PHP 5.0.0 <b>unlink()</b> can also be used with <em class="emphasis">some</em> URL wrappers. Refer to <a href="wrappers.html" class="xref">List of Supported Protocols/Wrappers</a> for a listing of which wrappers support <b>unlink()</b>. </td> </tr> </tbody> </colgroup> </table> </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 Basic <b>unlink()</b> usage</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br />$fh </span><span style="color: #007700">= </span><span style="color: #0000BB">fopen</span><span style="color: #007700">(</span><span style="color: #DD0000">'test.html'</span><span style="color: #007700">, </span><span style="color: #DD0000">'a'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">fwrite</span><span style="color: #007700">(</span><span style="color: #0000BB">$fh</span><span style="color: #007700">, </span><span style="color: #DD0000">'<h1>Hello world!</h1>'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">fclose</span><span style="color: #007700">(</span><span style="color: #0000BB">$fh</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">mkdir</span><span style="color: #007700">(</span><span style="color: #DD0000">'testdir'</span><span style="color: #007700">, </span><span style="color: #0000BB">0777</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">unlink</span><span style="color: #007700">(</span><span style="color: #DD0000">'test.html'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">unlink</span><span style="color: #007700">(</span><span style="color: #DD0000">'testdir'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> </div> </p> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><a href="function.rmdir.html" class="function" rel="rdfs-seeAlso">rmdir()</a> for removing directories</li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="ref.filesystem.html">Filesystem Functions</a></div> <div class="next" style="text-align: right; float: right;"><a href="book.mime-magic.html">Mimetype</a></div> <div class="up"><a href="ref.filesystem.html">Filesystem 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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