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43 lines
3.4 KiB
HTML
43 lines
3.4 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>获知连接是否为忙</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.pg-connection-busy" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">pg_connection_busy</h1>
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<p class="verinfo">(PHP 4 >= 4.2.0, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">pg_connection_busy</span> — <span class="dc-title">
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获知连接是否为忙
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</span></p>
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</div>
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<div class="refsect1 unknown-unknown-returnvalueu" id="refsect1-function.pg-connection-busy-unknown-unknown-returnvalueu">
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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>pg_connection_busy</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$connection</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>pg_connection_busy()</strong></span> 在此连接状态为忙的时候返回 <strong><code>TRUE</code></strong>。如果连接状态为忙，说明前一个查询仍然在执行。如果调用 <span class="function"><a href="pg_get_result.html" class="function">pg_get_result()</a></span> 函数的话，则会被锁死。
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</p>
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<p class="para">
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<div class="example" id="example-2475">
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<p><strong>Example #1 <span class="function"><strong>pg_connection_busy()</strong></span> 例子</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 /> $dbconn </span><span style="color: #007700">= </span><span style="color: #0000BB">pg_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"dbname=publisher"</span><span style="color: #007700">) or die(</span><span style="color: #DD0000">"Could not connect"</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$bs </span><span style="color: #007700">= </span><span style="color: #0000BB">pg_connection_busy</span><span style="color: #007700">(</span><span style="color: #0000BB">$dbconn</span><span style="color: #007700">);<br /> if (</span><span style="color: #0000BB">$bs</span><span style="color: #007700">) {<br /> echo </span><span style="color: #DD0000">'connection is busy'</span><span style="color: #007700">;<br /> }<br /> else {<br /> echo </span><span style="color: #DD0000">'connection is not busy'</span><span style="color: #007700">;<br /> }<br /></span><span style="color: #0000BB">?></span>
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</span>
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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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<p class="para">
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参见 <span class="function"><a href="pg_connection_status.html" class="function">pg_connection_status()</a></span> 和 <span class="function"><a href="pg_get_result.html" class="function">pg_get_result()</a></span>。
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</p>
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</div>
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</div></div></div></body></html> |