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<h1 class="refname">ReflectionClass::isSubclassOf</h1>
<p class="verinfo">(PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">ReflectionClass::isSubclassOf</span> — <span class="dc-title">Checks if a subclass</span></p>
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<div class="refsect1 description" id="refsect1-reflectionclass.issubclassof-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>ReflectionClass::isSubclassOf</strong></span>
( <span class="methodparam"><span class="type">string</span> <code class="parameter">$class</code></span>
)</div>
<p class="para rdfs-comment">
Checks if the class is a subclass of a specified class or implements
a specified interface.
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<div class="refsect1 parameters" id="refsect1-reflectionclass.issubclassof-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<code class="parameter">class</code></dt>
<dd>
<p class="para">
The class name being checked against.
</p>
</dd>
</dl>
</p>
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<div class="refsect1 returnvalues" id="refsect1-reflectionclass.issubclassof-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns <strong><code>TRUE</code></strong> on success or <strong><code>FALSE</code></strong> on failure.
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<div class="refsect1 seealso" id="refsect1-reflectionclass.issubclassof-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"><span class="methodname"><a href="reflectionclass.isinterface.html" class="methodname" rel="rdfs-seeAlso">ReflectionClass::isInterface()</a> - Checks if the class is an interface</span></li>
<li class="member"><span class="methodname"><a href="reflectionclass.implementsinterface.html" class="methodname" rel="rdfs-seeAlso">ReflectionClass::implementsInterface()</a> - Implements interface</span></li>
<li class="member"><span class="function"><a href="function.is-subclass-of.html" class="function" rel="rdfs-seeAlso">is_subclass_of()</a> - Checks if the object has this class as one of its parents or implements it</span></li>
<li class="member"><span class="function"><a href="function.get-parent-class.html" class="function" rel="rdfs-seeAlso">get_parent_class()</a> - Retrieves the parent class name for object or class</span></li>
</ul>
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