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35 lines
2.1 KiB
HTML
35 lines
2.1 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>Ping 一个服务器连接，如果没有连接则重新连接</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.mysql-ping" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">mysql_ping</h1>
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<p class="verinfo">(PHP 4 >= 4.3.0, PHP 5)</p><p class="refpurpose"><span class="refname">mysql_ping</span> — <span class="dc-title">Ping 一个服务器连接，如果没有连接则重新连接</span></p>
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</div>
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<div class="refsect1 unknown-unknown-unknown-unknown-unknown-unknown-unknown-unknown-unknown-unknown-unknown-unknown-unknown-unknown-seealtc" id="refsect1-function.mysql-ping-unknown-unknown-unknown-unknown-unknown-unknown-unknown-unknown-unknown-unknown-unknown-unknown-unknown-unknown-seealtc">
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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>mysql_ping</strong></span>
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([ <span class="methodparam"><span class="type">resource</span> <code class="parameter">$
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link_identifier
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</code></span>
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] ) : <span class="type">bool</span></div>
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<p class="para rdfs-comment">
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<span class="function"><strong>mysql_ping()</strong></span>
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检查到服务器的连接是否正常。如果断开，则自动尝试连接。本函数可用于空闲很久的脚本来检查服务器是否关闭了连接，如果有必要则重新连接上。如果到服务器的连接可用则
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<span class="function"><strong>mysql_ping()</strong></span> 返回 <strong><code>TRUE</code></strong>，否则返回 <strong><code>FALSE</code></strong>。
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</p>
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<p class="para">
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参见
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<span class="function"><a href="mysql_thread_id.html" class="function">mysql_thread_id()</a></span> 和
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<span class="function"><a href="mysql_list_processes.html" class="function">mysql_list_processes()</a></span>。
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</p>
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</div>
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</div></div></div></body></html> |