<!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>Releases a previously acquired reference</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="weakref.get.html">Weakref::get</a></div> <div class="next" style="text-align: right; float: right;"><a href="weakref.valid.html">Weakref::valid</a></div> <div class="up"><a href="class.weakref.html">WeakRef</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="weakref.release" class="refentry"> <div class="refnamediv"> <h1 class="refname">Weakref::release</h1> <p class="verinfo">(PECL weakref >= 0.1.0)</p><p class="refpurpose"><span class="refname">Weakref::release</span> — <span class="dc-title">Releases a previously acquired reference</span></p> </div> <div class="refsect1 description" id="refsect1-weakref.release-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="modifier">public</span> <span class="type">bool</span> <span class="methodname"><strong>Weakref::release</strong></span> ( <span class="methodparam">void</span> )</div> <p class="para rdfs-comment"> Releases a previously acquired reference. Potentially turning a strong reference back into a weak reference. </p> </div> <div class="refsect1 parameters" id="refsect1-weakref.release-parameters"> <h3 class="title">Parameters</h3> <p class="para">This function has no parameters.</p> </div> <div class="refsect1 returnvalues" id="refsect1-weakref.release-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns <strong><code>TRUE</code></strong> if the reference was previously acquired and thus could be released, <strong><code>FALSE</code></strong> otherwise. </p> </div> <div class="refsect1 examples" id="refsect1-weakref.release-examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example" id="example-552"> <p><strong>Example #1 <span class="methodname"><strong>Weakref::release()</strong></span> example</strong></p> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br /></span><span style="color: #007700">class </span><span style="color: #0000BB">MyClass </span><span style="color: #007700">{<br /> public function </span><span style="color: #0000BB">__destruct</span><span style="color: #007700">() {<br /> echo </span><span style="color: #DD0000">"Destroying object!\n"</span><span style="color: #007700">;<br /> }<br />}<br /><br /></span><span style="color: #0000BB">$o1 </span><span style="color: #007700">= new </span><span style="color: #0000BB">MyClass</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$r1 </span><span style="color: #007700">= new </span><span style="color: #0000BB">Weakref</span><span style="color: #007700">(</span><span style="color: #0000BB">$o1</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$r1</span><span style="color: #007700">-></span><span style="color: #0000BB">acquire</span><span style="color: #007700">();<br /><br />echo </span><span style="color: #DD0000">"Unsetting o1...\n"</span><span style="color: #007700">;<br />unset(</span><span style="color: #0000BB">$o1</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$o2 </span><span style="color: #007700">= </span><span style="color: #0000BB">$r1</span><span style="color: #007700">-></span><span style="color: #0000BB">get</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">$r1</span><span style="color: #007700">-></span><span style="color: #0000BB">release</span><span style="color: #007700">();<br /><br />echo </span><span style="color: #DD0000">"Unsetting o2...\n"</span><span style="color: #007700">;<br />unset(</span><span style="color: #0000BB">$o2</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:</p></div> <div class="example-contents screen"> <div class="cdata"><pre> Unsetting o1... Unsetting o2... Destroying object! </pre></div> </div> </div> </p> </div> <div class="refsect1 seealso" id="refsect1-weakref.release-seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"> <span class="methodname"><a href="weakref.acquire.html" class="methodname" rel="rdfs-seeAlso">Weakref::acquire()</a> - Acquires a strong reference on that object</span></li> </ul> </p> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="weakref.get.html">Weakref::get</a></div> <div class="next" style="text-align: right; float: right;"><a href="weakref.valid.html">Weakref::valid</a></div> <div class="up"><a href="class.weakref.html">WeakRef</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>