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106 lines
5.1 KiB
HTML
106 lines
5.1 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<title>Gets information about the garbage collector</title>
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</head>
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<body class="docs"><div id="layout">
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<div id="layout-content"><div id="function.gc-status" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">gc_status</h1>
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<p class="verinfo">(PHP 7 >= 7.3.0)</p><p class="refpurpose"><span class="refname">gc_status</span> — <span class="dc-title">Gets information about the garbage collector</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.gc-status-description">
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<h3 class="title">说明</h3>
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<div class="methodsynopsis dc-description">
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<span class="methodname"><strong>gc_status</strong></span>
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( <span class="methodparam">void</span>
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) : <span class="type">array</span></div>
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<p class="para rdfs-comment">
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Gets information about the current state of the garbage collector.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.gc-status-parameters">
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<h3 class="title">参数</h3>
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<p class="para">此函数没有参数。</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.gc-status-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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Returns an associative array with the following elements:
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<ul class="itemizedlist">
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<li class="listitem">
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<span class="simpara">
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<em>"runs"</em>
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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<em>"collected"</em>
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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<em>"threshold"</em>
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</span>
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</li>
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<li class="listitem">
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<span class="simpara">
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<em>"roots"</em>
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</span>
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</li>
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</ul>
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.gc-status-examples">
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<h3 class="title">范例</h3>
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<p class="para">
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<div class="example" id="example-494">
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<p><strong>Example #1 <span class="function"><strong>gc_status()</strong></span> Usage</strong></p>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br /><br /></span><span style="color: #FF8000">// create object tree that needs gc collection<br /></span><span style="color: #0000BB">$a </span><span style="color: #007700">= new </span><span style="color: #0000BB">stdClass</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">$a</span><span style="color: #007700">-></span><span style="color: #0000BB">b </span><span style="color: #007700">= [];<br />for (</span><span style="color: #0000BB">$i </span><span style="color: #007700">= </span><span style="color: #0000BB">0</span><span style="color: #007700">; </span><span style="color: #0000BB">$i </span><span style="color: #007700">< </span><span style="color: #0000BB">100000</span><span style="color: #007700">; </span><span style="color: #0000BB">$i</span><span style="color: #007700">++) {<br /> </span><span style="color: #0000BB">$b </span><span style="color: #007700">= new </span><span style="color: #0000BB">stdClass</span><span style="color: #007700">();<br /> </span><span style="color: #0000BB">$b</span><span style="color: #007700">-></span><span style="color: #0000BB">a </span><span style="color: #007700">= </span><span style="color: #0000BB">$a</span><span style="color: #007700">;<br /> </span><span style="color: #0000BB">$a</span><span style="color: #007700">-></span><span style="color: #0000BB">b</span><span style="color: #007700">[] = </span><span style="color: #0000BB">$b</span><span style="color: #007700">;<br />}<br />unset(</span><span style="color: #0000BB">$a</span><span style="color: #007700">);<br />unset(</span><span style="color: #0000BB">$b</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">gc_collect_cycles</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">gc_status</span><span style="color: #007700">());</span>
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</span>
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</pre></div>
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</div>
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<div class="example-contents"><p>以上例程的输出类似于：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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array(4) {
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["runs"]=>
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int(5)
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["collected"]=>
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int(100002)
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["threshold"]=>
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int(50001)
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["roots"]=>
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int(0)
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}
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</pre></div>
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</div>
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</div>
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</p>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.gc-status-seealso">
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<h3 class="title">参见</h3>
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<p class="para">
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<ul class="simplelist">
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<li class="member"><a href="features.gc.html" class="link">Garbage Collection</a></li>
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</ul>
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</p>
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</div>
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</div></div></div></body></html> |