📄 function.class-parents.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>Return the parent classes of the given 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.class-implements.html">class_implements</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.iterator-count.html">iterator_count</a></div> <div class="up"><a href="ref.spl.html">SPL Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.class-parents" class="refentry"> <div class="refnamediv"> <h1 class="refname">class_parents</h1> <p class="verinfo">(PHP 5)</p><p class="refpurpose"><span class="refname">class_parents</span> — <span class="dc-title"> Return the parent classes of the given class </span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">array</span> <span class="methodname"><b><b>class_parents</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">$class</tt></span> [, <span class="methodparam"><span class="type">bool</span> <tt class="parameter">$autoload</tt></span> ] )</div> <p class="para rdfs-comment"> This function returns an array with the name of the parent classes of the given <i><tt class="parameter">class</tt></i>. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">class</tt></i></span> <dd> <p class="para"> An object (class instance) or a string (class name). </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">autoload</tt></i></span> <dd> <p class="para"> Whether to allow this function to load the class automatically through the <a href="language.oop5.autoload.html" class="link">__autoload</a> magic method. Defaults to <b><tt>TRUE</tt></b>. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> An array on success, or <b><tt>FALSE</tt></b> on error. </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">5.1.0</td> <td colspan="1" rowspan="1" align="left"> Added the option to pass the <i><tt class="parameter">class</tt></i> parameter as a string. Added the <i><tt class="parameter">autoload</tt></i> parameter. </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 <b>class_parents()</b> example</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">foo </span><span style="color: #007700">{ }<br />class </span><span style="color: #0000BB">bar </span><span style="color: #007700">extends </span><span style="color: #0000BB">foo </span><span style="color: #007700">{}<br /><br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">class_parents</span><span style="color: #007700">(new </span><span style="color: #0000BB">bar</span><span style="color: #007700">));<br /><br /></span><span style="color: #FF8000">// since PHP 5.1.0 you may also specify the parameter as a string<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">class_parents</span><span style="color: #007700">(</span><span style="color: #DD0000">'bar'</span><span style="color: #007700">));<br /><br /><br />function </span><span style="color: #0000BB">__autoload</span><span style="color: #007700">(</span><span style="color: #0000BB">$class_name</span><span style="color: #007700">) {<br /> require_once </span><span style="color: #0000BB">$class_name </span><span style="color: #007700">. </span><span style="color: #DD0000">'.php'</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #FF8000">// use __autoload to load the 'not_loaded' class<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">class_parents</span><span style="color: #007700">(</span><span style="color: #DD0000">'not_loaded'</span><span style="color: #007700">, </span><span style="color: #0000BB">true</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 something similar to:</p></div> <div class="example-contents"><pre><div class="cdata"><pre>Array( [foo] => foo)Array( [parent_of_not_loaded] => parent_of_not_loaded)</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.class-implements.html" class="function" rel="rdfs-seeAlso">class_implements()</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.class-implements.html">class_implements</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.iterator-count.html">iterator_count</a></div> <div class="up"><a href="ref.spl.html">SPL 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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