<!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>Checks whether an object exists in the storage</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="splobjectstorage.next.html">SplObjectStorage::next</a></div> <div class="next" style="text-align: right; float: right;"><a href="splobjectstorage.offsetget.html">SplObjectStorage::offsetGet</a></div> <div class="up"><a href="class.splobjectstorage.html">SplObjectStorage</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="splobjectstorage.offsetexists" class="refentry"> <div class="refnamediv"> <h1 class="refname">SplObjectStorage::offsetExists</h1> <p class="verinfo">(PHP 5 >= 5.3.0)</p><p class="refpurpose"><span class="refname">SplObjectStorage::offsetExists</span> — <span class="dc-title">Checks whether an object exists in the storage</span></p> </div> <div class="refsect1 description" id="refsect1-splobjectstorage.offsetexists-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>SplObjectStorage::offsetExists</strong></span> ( <span class="methodparam"><span class="type">object</span> <code class="parameter">$object</code></span> )</div> <p class="para rdfs-comment"> Checks whether an <span class="type"><a href="language.types.object.html" class="type object">object</a></span> exists in the storage. </p> <blockquote class="note"><p><strong class="note">Note</strong>: <p class="para"> <span class="methodname"><strong>SplObjectStorage::offsetExists()</strong></span> is an alias of <span class="methodname"><a href="splobjectstorage.contains.html" class="methodname">SplObjectStorage::contains()</a></span>. </p> </p></blockquote> </div> <div class="refsect1 parameters" id="refsect1-splobjectstorage.offsetexists-parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><em><code class="parameter">object</code></em></span> <dd> <p class="para"> The <span class="type"><a href="language.types.object.html" class="type object">object</a></span> to look for. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues" id="refsect1-splobjectstorage.offsetexists-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns <strong><code>TRUE</code></strong> if the <span class="type"><a href="language.types.object.html" class="type object">object</a></span> exists in the storage, and <strong><code>FALSE</code></strong> otherwise. </p> </div> <div class="refsect1 examples" id="refsect1-splobjectstorage.offsetexists-examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example" id="example-3819"> <p><strong>Example #1 <span class="function"><strong>SplObjectStorage::offsetExists()</strong></span> example</strong></p> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br />$s </span><span style="color: #007700">= new </span><span style="color: #0000BB">SplObjectStorage</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$o1 </span><span style="color: #007700">= new </span><span style="color: #0000BB">StdClass</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$o2 </span><span style="color: #007700">= new </span><span style="color: #0000BB">StdClass</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$s</span><span style="color: #007700">-></span><span style="color: #0000BB">attach</span><span style="color: #007700">(</span><span style="color: #0000BB">$o1</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$s</span><span style="color: #007700">-></span><span style="color: #0000BB">offsetExists</span><span style="color: #007700">(</span><span style="color: #0000BB">$o1</span><span style="color: #007700">)); </span><span style="color: #FF8000">// Similar to isset($s[$o1])<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$s</span><span style="color: #007700">-></span><span style="color: #0000BB">offsetExists</span><span style="color: #007700">(</span><span style="color: #0000BB">$o2</span><span style="color: #007700">)); </span><span style="color: #FF8000">// Similar to isset($s[$o2])<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(false) </pre></div> </div> </div> </p> </div> <div class="refsect1 seealso" id="refsect1-splobjectstorage.offsetexists-seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"> <span class="methodname"><a href="splobjectstorage.offsetset.html" class="methodname" rel="rdfs-seeAlso">SplObjectStorage::offsetSet()</a> - Associates data to an object in the storage</span></li> <li class="member"> <span class="methodname"><a href="splobjectstorage.offsetget.html" class="methodname" rel="rdfs-seeAlso">SplObjectStorage::offsetGet()</a> - Returns the data associated with an object</span></li> <li class="member"> <span class="methodname"><a href="splobjectstorage.offsetunset.html" class="methodname" rel="rdfs-seeAlso">SplObjectStorage::offsetUnset()</a> - Removes an object from the storage</span></li> </ul> </p> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; 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