📄 function.get-parent-class.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Retrieves the parent class name for object or class</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.get-object-vars.html">get_object_vars</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.interface-exists.html">interface_exists</a></div> <div class="up"><a href="ref.classobj.html">Classes/Object Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.get-parent-class" class="refentry"> <div class="refnamediv"> <h1 class="refname">get_parent_class</h1> <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">get_parent_class</span> — <span class="dc-title">Retrieves the parent class name for object or class</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">string</span> <span class="methodname"><b><b>get_parent_class</b></b></span> ([ <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <tt class="parameter">$object</tt></span> ] )</div> <p class="para rdfs-comment"> Retrieves the parent class name for object or class. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">object</tt></i></span> <dd> <p class="para"> The tested object or class name </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns the name of the parent class of the class of which <i><tt class="parameter">object</tt></i> is an instance or the name. </p> <blockquote><p><b class="note">Note</b>: If the object does not have a parent <b><tt>FALSE</tt></b> will be returned. <br /> </p></blockquote> <p class="para"> If called without parameter outside object, this function returns <b><tt>FALSE</tt></b>. </p> </div> <div class="refsect1 changelog"> <h3 class="title">ChangeLog</h3> <p class="para"> <table class="informaltable"> <colgroup> <thead valign="middle"> <tr valign="middle"> <th colspan="1">Version</th> <th colspan="1">Description</th> </tr> </thead> <tbody valign="middle" class="tbody"> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">Before 5.1.0</td> <td colspan="1" rowspan="1" align="left"> If called without parameter outside object, this function would have returned <b><tt>NULL</tt></b> with a warning. </td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">Since 5.0.0</td> <td colspan="1" rowspan="1" align="left"> The <i><tt class="parameter">object</tt></i> parameter is optional if called from the object's method. </td> </tr> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">Since 4.0.5</td> <td colspan="1" rowspan="1" align="left"> If <i><tt class="parameter">object</tt></i> is a string, returns the name of the parent class of the class with that name. </td> </tr> </tbody> </colgroup> </table> </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 Using <b>get_parent_class()</b></b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /><br /></span><span style="color: #007700">class </span><span style="color: #0000BB">dad </span><span style="color: #007700">{<br /> function </span><span style="color: #0000BB">dad</span><span style="color: #007700">()<br /> {<br /> </span><span style="color: #FF8000">// implements some logic<br /> </span><span style="color: #007700">}<br />}<br /><br />class </span><span style="color: #0000BB">child </span><span style="color: #007700">extends </span><span style="color: #0000BB">dad </span><span style="color: #007700">{<br /> function </span><span style="color: #0000BB">child</span><span style="color: #007700">()<br /> {<br /> echo </span><span style="color: #DD0000">"I'm " </span><span style="color: #007700">, </span><span style="color: #0000BB">get_parent_class</span><span style="color: #007700">(</span><span style="color: #0000BB">$this</span><span style="color: #007700">) , </span><span style="color: #DD0000">"'s son\n"</span><span style="color: #007700">;<br /> }<br />}<br /><br />class </span><span style="color: #0000BB">child2 </span><span style="color: #007700">extends </span><span style="color: #0000BB">dad </span><span style="color: #007700">{<br /> function </span><span style="color: #0000BB">child2</span><span style="color: #007700">()<br /> {<br /> echo </span><span style="color: #DD0000">"I'm " </span><span style="color: #007700">, </span><span style="color: #0000BB">get_parent_class</span><span style="color: #007700">(</span><span style="color: #DD0000">'child2'</span><span style="color: #007700">) , </span><span style="color: #DD0000">"'s son too\n"</span><span style="color: #007700">;<br /> }<br />}<br /><br /></span><span style="color: #0000BB">$foo </span><span style="color: #007700">= new </span><span style="color: #0000BB">child</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">$bar </span><span style="color: #007700">= new </span><span style="color: #0000BB">child2</span><span style="color: #007700">();<br /><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"><pre><div class="cdata"><pre>I'm dad's sonI'm dad's son too</pre></div> </pre></div> </div> </p> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><a href="function.get-class.html" class="function" rel="rdfs-seeAlso">get_class()</a></li> <li class="member"><a href="function.is-subclass-of.html" class="function" rel="rdfs-seeAlso">is_subclass_of()</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.get-object-vars.html">get_object_vars</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.interface-exists.html">interface_exists</a></div> <div class="up"><a href="ref.classobj.html">Classes/Object Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 快捷键说明
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