<!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>Finds whether a variable is an object</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.is-numeric.html">is_numeric</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.is-real.html">is_real</a></div> <div class="up"><a href="ref.var.html">Variable handling Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="function.is-object" class="refentry"> <div class="refnamediv"> <h1 class="refname">is_object</h1> <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">is_object</span> — <span class="dc-title">Finds whether a variable is an object</span></p> </div> <div class="refsect1 description" id="refsect1-function.is-object-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><strong>is_object</strong></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">$var</code></span> )</div> <p class="para rdfs-comment"> Finds whether the given variable is an object. </p> </div> <div class="refsect1 parameters" id="refsect1-function.is-object-parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><em><code class="parameter">var</code></em></span> <dd> <p class="para"> The variable being evaluated. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues" id="refsect1-function.is-object-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns <strong><code>TRUE</code></strong> if <em><code class="parameter">var</code></em> is an <span class="type"><a href="language.types.object.html" class="type object">object</a></span>, <strong><code>FALSE</code></strong> otherwise. </p> </div> <div class="refsect1 examples" id="refsect1-function.is-object-examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example" id="example-5263"> <p><strong>Example #1 <span class="function"><strong>is_object()</strong></span> example</strong></p> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"> <span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">// Declare a simple function to return an <br />// array from our object<br /></span><span style="color: #007700">function </span><span style="color: #0000BB">get_students</span><span style="color: #007700">(</span><span style="color: #0000BB">$obj</span><span style="color: #007700">)<br />{<br /> if (!</span><span style="color: #0000BB">is_object</span><span style="color: #007700">(</span><span style="color: #0000BB">$obj</span><span style="color: #007700">)) {<br /> return </span><span style="color: #0000BB">false</span><span style="color: #007700">;<br /> }<br /><br /> return </span><span style="color: #0000BB">$obj</span><span style="color: #007700">-></span><span style="color: #0000BB">students</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #FF8000">// Declare a new class instance and fill up <br />// some values<br /></span><span style="color: #0000BB">$obj </span><span style="color: #007700">= new </span><span style="color: #0000BB">stdClass</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">$obj</span><span style="color: #007700">-></span><span style="color: #0000BB">students </span><span style="color: #007700">= array(</span><span style="color: #DD0000">'Kalle'</span><span style="color: #007700">, </span><span style="color: #DD0000">'Ross'</span><span style="color: #007700">, </span><span style="color: #DD0000">'Felipe'</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">get_students</span><span style="color: #007700">(</span><span style="color: #0000BB">null</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">get_students</span><span style="color: #007700">(</span><span style="color: #0000BB">$obj</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">?></span> </span> </code></div> </div> </div> </p> </div> <div class="refsect1 notes" id="refsect1-function.is-object-notes"> <h3 class="title">Notes</h3> <blockquote class="note"><p><strong class="note">Note</strong>: <p class="para"> This function will return <strong><code>FALSE</code></strong> if used on an unserialized object where the class definition is not present (even though <span class="function"><a href="function.gettype.html" class="function">gettype()</a></span> returns <span class="type"><a href="language.types.object.html" class="type object">object</a></span>). </p> </p></blockquote> </div> <div class="refsect1 seealso" id="refsect1-function.is-object-seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"> <span class="function"><a href="function.is-bool.html" class="function" rel="rdfs-seeAlso">is_bool()</a> - Finds out whether a variable is a boolean</span></li> <li class="member"> <span class="function"><a href="function.is-int.html" class="function" rel="rdfs-seeAlso">is_int()</a> - Find whether the type of a variable is integer</span></li> <li class="member"> <span class="function"><a href="function.is-float.html" class="function" rel="rdfs-seeAlso">is_float()</a> - Finds whether the type of a variable is float</span></li> <li class="member"> <span class="function"><a href="function.is-string.html" class="function" rel="rdfs-seeAlso">is_string()</a> - Find whether the type of a variable is string</span></li> <li class="member"> <span class="function"><a href="function.is-array.html" class="function" rel="rdfs-seeAlso">is_array()</a> - Finds whether a variable is an array</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="function.is-numeric.html">is_numeric</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.is-real.html">is_real</a></div> <div class="up"><a href="ref.var.html">Variable handling Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>