<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>Create a hardlink for file</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.eio-init.html">eio_init</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.eio-lstat.html">eio_lstat</a></div> <div class="up"><a href="ref.eio.html">Eio Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="function.eio-link" class="refentry"> <div class="refnamediv"> <h1 class="refname">eio_link</h1> <p class="verinfo">(PECL eio >= 0.0.1dev)</p><p class="refpurpose"><span class="refname">eio_link</span> — <span class="dc-title">Create a hardlink for file</span></p> </div> <div class="refsect1 description" id="refsect1-function.eio-link-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">resource</span> <span class="methodname"><strong>eio_link</strong></span> ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$path</code></span> , <span class="methodparam"><span class="type">string</span> <code class="parameter">$new_path</code></span> [, <span class="methodparam"><span class="type">int</span> <code class="parameter">$pri</code><span class="initializer"> = EIO_PRI_DEFAULT</span></span> [, <span class="methodparam"><span class="type"><a href="language.types.callable.html" class="type callable">callable</a></span> <code class="parameter">$callback</code><span class="initializer"> = NULL</span></span> [, <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$data</code><span class="initializer"> = NULL</span></span> ]]] )</div> <p class="para rdfs-comment"> <span class="function"><strong>eio_link()</strong></span> creates a hardlink <em><code class="parameter">new_path</code></em> for a file specified by <em><code class="parameter">path</code></em>. </p> </div> <div class="refsect1 parameters" id="refsect1-function.eio-link-parameters"> <h3 class="title">Parameters</h3> <dl> <dt> <span class="term"><em><code class="parameter">path</code></em></span> <dd> <p class="para"> Source file path. </p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">new_path</code></em></span> <dd> <p class="para"> Target file path. </p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">pri</code></em></span> <dd> <p class="para">The request priority: <strong><code>EIO_PRI_DEFAULT</code></strong>, <strong><code>EIO_PRI_MIN</code></strong>, <strong><code>EIO_PRI_MAX</code></strong>, or <strong><code>NULL</code></strong>. If <strong><code>NULL</code></strong> passed, <em><code class="parameter">pri</code></em> internally is set to <strong><code>EIO_PRI_DEFAULT</code></strong>. </p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">callback</code></em></span> <dd> <p class="para"> <em><code class="parameter">callback</code></em> function is called when the request is done. It should match the following prototype: <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"> void callback(mixed $data, int $result[, resource $req]);</span> </code></div></div> <dl> <dt> <span class="term"><em><code class="parameter">data</code></em></span> <dd> <p class="para">is custom data passed to the request.</p></dd> </dt> <dt> <span class="term"><em><code class="parameter">result</code></em></span> <dd> <p class="para">request-specific result value; basically, the value returned by corresponding system call.</p></dd> </dt> <dt> <span class="term"><em><code class="parameter">req</code></em></span> <dd> <p class="para">is optional request resource which can be used with functions like <span class="function"><a href="function.eio-get-last-error.html" class="function">eio_get_last_error()</a></span></p></dd> </dt> </dl> </p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">data</code></em></span> <dd> <p class="para"> Arbitrary variable passed to <em><code class="parameter">callback</code></em>. </p> </dd> </dt> </dl> </div> <div class="refsect1 returnvalues" id="refsect1-function.eio-link-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> </p> </div> <div class="refsect1 examples" id="refsect1-function.eio-link-examples"> <h3 class="title">Examples</h3> <div class="example" id="example-3594"> <p><strong>Example #1 <span class="function"><strong>eio_link()</strong></span> example</strong></p> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br />$filename </span><span style="color: #007700">= </span><span style="color: #0000BB">dirname</span><span style="color: #007700">(</span><span style="color: #0000BB">__FILE__</span><span style="color: #007700">).</span><span style="color: #DD0000">"/symlink.dat"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">touch</span><span style="color: #007700">(</span><span style="color: #0000BB">$filename</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$link </span><span style="color: #007700">= </span><span style="color: #0000BB">dirname</span><span style="color: #007700">(</span><span style="color: #0000BB">__FILE__</span><span style="color: #007700">).</span><span style="color: #DD0000">"/symlink.link"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$hardlink </span><span style="color: #007700">= </span><span style="color: #0000BB">dirname</span><span style="color: #007700">(</span><span style="color: #0000BB">__FILE__</span><span style="color: #007700">).</span><span style="color: #DD0000">"/hardlink.link"</span><span style="color: #007700">;<br /><br />function </span><span style="color: #0000BB">my_hardlink_cb</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">, </span><span style="color: #0000BB">$result</span><span style="color: #007700">) {<br /> global </span><span style="color: #0000BB">$link</span><span style="color: #007700">, </span><span style="color: #0000BB">$filename</span><span style="color: #007700">;<br /> </span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">file_exists</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">) && !</span><span style="color: #0000BB">is_link</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">));<br /> @</span><span style="color: #0000BB">unlink</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">);<br /><br /> </span><span style="color: #0000BB">eio_symlink</span><span style="color: #007700">(</span><span style="color: #0000BB">$filename</span><span style="color: #007700">, </span><span style="color: #0000BB">$link</span><span style="color: #007700">, </span><span style="color: #0000BB">EIO_PRI_DEFAULT</span><span style="color: #007700">, </span><span style="color: #DD0000">"my_symlink_cb"</span><span style="color: #007700">, </span><span style="color: #0000BB">$link</span><span style="color: #007700">);<br />}<br /><br />function </span><span style="color: #0000BB">my_symlink_cb</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">, </span><span style="color: #0000BB">$result</span><span style="color: #007700">) {<br /> global </span><span style="color: #0000BB">$link</span><span style="color: #007700">, </span><span style="color: #0000BB">$filename</span><span style="color: #007700">;<br /> </span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">file_exists</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">) && </span><span style="color: #0000BB">is_link</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">));<br /><br /> if (!</span><span style="color: #0000BB">eio_readlink</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">, </span><span style="color: #0000BB">EIO_PRI_DEFAULT</span><span style="color: #007700">, </span><span style="color: #DD0000">"my_readlink_cb"</span><span style="color: #007700">, </span><span style="color: #0000BB">NULL</span><span style="color: #007700">)) {<br /> @</span><span style="color: #0000BB">unlink</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">);<br /> @</span><span style="color: #0000BB">unlink</span><span style="color: #007700">(</span><span style="color: #0000BB">$filename</span><span style="color: #007700">);<br /> }<br />}<br /><br />function </span><span style="color: #0000BB">my_readlink_cb</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">, </span><span style="color: #0000BB">$result</span><span style="color: #007700">) {<br /> global </span><span style="color: #0000BB">$filename</span><span style="color: #007700">, </span><span style="color: #0000BB">$link</span><span style="color: #007700">;<br /> </span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">);<br /><br /> @</span><span style="color: #0000BB">unlink</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">);<br /> @</span><span style="color: #0000BB">unlink</span><span style="color: #007700">(</span><span style="color: #0000BB">$filename</span><span style="color: #007700">);<br />}<br /><br /></span><span style="color: #0000BB">eio_link</span><span style="color: #007700">(</span><span style="color: #0000BB">$filename</span><span style="color: #007700">, </span><span style="color: #0000BB">$hardlink</span><span style="color: #007700">, </span><span style="color: #0000BB">EIO_PRI_DEFAULT</span><span style="color: #007700">, </span><span style="color: #DD0000">"my_hardlink_cb"</span><span style="color: #007700">, </span><span style="color: #0000BB">$hardlink</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">eio_event_loop</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 screen"> <div class="cdata"><pre> bool(true) bool(true) string(%d) "%ssymlink.dat" </pre></div> </div> </div> </div> <div class="refsect1 seealso" id="refsect1-function.eio-link-seealso"> <h3 class="title">See Also</h3> <ul class="simplelist"> <li class="member">eio_symlink</li> </ul> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.eio-init.html">eio_init</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.eio-lstat.html">eio_lstat</a></div> <div class="up"><a href="ref.eio.html">Eio Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>