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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>The SplPriorityQueue 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="book.spl.html">SPL</a></div> <div class="next" style="text-align: right; float: right;"><a href="splpriorityqueue.compare.html">SplPriorityQueue::compare</a></div> <div class="up"><a href="book.spl.html">SPL</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div> <h1 class="title">The SplPriorityQueue class</h1> <div class="partintro"> <div id="splpriorityqueue.intro" class="section"> <h2 class="title">Introduction</h2> <p class="para"> The SplPriorityQueue class provides the main functionalities of an prioritized queue, implemented using a heap. </p> </div> <div id="splpriorityqueue.synopsis" class="section"> <h2 class="title">Class synopsis</h2> <div class="classsynopsis"> <div class="ooclass"><b class="classname">SplPriorityQueue</b></div> <div class="classsynopsisinfo"> <span class="ooclass"> <b class="classname">SplPriorityQueue</b> </span> <span class="oointerface">implements <span class="interfacename">Iterator</span> </span> <span class="oointerface">, <span class="interfacename">Countable</span> </span> {</div> <div class="classsynopsisinfo classsynopsisinfo_comment">/* Methods */</div> <div class="constructorsynopsis dc-description"> <span class="methodname"><b><a href="splpriorityqueue.construct.html" class="function">SplPriorityQueue::__construct</a></b></span> ( <span class="methodparam">void</span> )</div> <div class="methodsynopsis dc-description"> <span class="type">void</span> <span class="methodname"><b><a href="splpriorityqueue.compare.html" class="function">SplPriorityQueue::compare</a></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">$priority1</tt></span> , <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <tt class="parameter">$priority1</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">int</span> <span class="methodname"><b><a href="splpriorityqueue.count.html" class="function">SplPriorityQueue::count</a></b></span> ( <span class="methodparam">void</span> )</div><div class="methodsynopsis dc-description"> <span class="type">mixed</span> <span class="methodname"><b><a href="splpriorityqueue.current.html" class="function">SplPriorityQueue::current</a></b></span> ( <span class="methodparam">void</span> )</div><div class="methodsynopsis dc-description"> <span class="type">mixed</span> <span class="methodname"><b><a href="splpriorityqueue.extract.html" class="function">SplPriorityQueue::extract</a></b></span> ( <span class="methodparam">void</span> )</div><div class="methodsynopsis dc-description"> <span class="type">void</span> <span class="methodname"><b><a href="splpriorityqueue.insert.html" class="function">SplPriorityQueue::insert</a></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">$value</tt></span> , <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <tt class="parameter">$priority</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><a href="splpriorityqueue.isempty.html" class="function">SplPriorityQueue::isEmpty</a></b></span> ( <span class="methodparam">void</span> )</div><div class="methodsynopsis dc-description"> <span class="type">mixed</span> <span class="methodname"><b><a href="splpriorityqueue.key.html" class="function">SplPriorityQueue::key</a></b></span> ( <span class="methodparam">void</span> )</div><div class="methodsynopsis dc-description"> <span class="type">void</span> <span class="methodname"><b><a href="splpriorityqueue.next.html" class="function">SplPriorityQueue::next</a></b></span> ( <span class="methodparam">void</span> )</div><div class="methodsynopsis dc-description"> <span class="type">void</span> <span class="methodname"><b><a href="splpriorityqueue.recoverfromcorruption.html" class="function">SplPriorityQueue::recoverFromCorruption</a></b></span> ( <span class="methodparam">void</span> )</div><div class="methodsynopsis dc-description"> <span class="type">void</span> <span class="methodname"><b><a href="splpriorityqueue.rewind.html" class="function">SplPriorityQueue::rewind</a></b></span> ( <span class="methodparam">void</span> )</div><div class="methodsynopsis dc-description"> <span class="type">void</span> <span class="methodname"><b><a href="splpriorityqueue.setextractflags.html" class="function">SplPriorityQueue::setExtractFlags</a></b></span> ( <span class="methodparam"><span class="type">int</span> <tt class="parameter">$flags</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">mixed</span> <span class="methodname"><b><a href="splpriorityqueue.top.html" class="function">SplPriorityQueue::top</a></b></span> ( <span class="methodparam">void</span> )</div><div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><a href="splpriorityqueue.valid.html" class="function">SplPriorityQueue::valid</a></b></span> ( <span class="methodparam">void</span> )</div> }</div> </div> </div> <h2>Table of Contents</h2><ul class="chunklist chunklist_reference"><li><a href="splpriorityqueue.compare.html">SplPriorityQueue::compare</a> 鈥⌨️ 快捷键说明
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