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116 lines
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HTML
116 lines
4.9 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>Sets a millisecond timeout for database calls</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.oci-set-call-timout" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">oci_set_call_timeout</h1>
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<p class="verinfo">(PHP 7 >= 7.2.14, PHP 7.3.1 > 7.3 PECL OCI8 >= 2.2.0)</p><p class="refpurpose"><span class="refname">oci_set_call_timeout</span> — <span class="dc-title">Sets a millisecond timeout for database calls</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.oci-set-call-timout-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>oci_set_call_timeout</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$connection</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$time_out</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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Sets a timeout limiting the maxium time a database round-trip using this connection may take.
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</p>
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<p class="para">
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Each OCI8 operation may make zero or more calls to Oracle's client
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library. These internal calls may then may make zero or more
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round-trips to Oracle Database. If any one of those round-trips
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takes more than <em>time_out</em> milliseconds, then the
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operation is cancelled and an error is returned to the application.
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</p>
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<p class="para">
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The <em>time_out</em> value applies to each round-trip
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individually, not to the sum of all round-trips. Time spent
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processing in PHP OCI8 before or after the completion of each
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round-trip is not counted.
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</p>
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<p class="para">
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When a call is interrupted, Oracle will attempt to clean up the
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connection for reuse. This operation is allowed to run for
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another <em>time_out</em> period. Depending on the
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outcome of the cleanup, the connection may or may not be reusable.
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</p>
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<p class="para">
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When persistent connections are used, the timeout value will be
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retained across PHP requests.
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</p>
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<p class="para">
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The <span class="function"><strong>oci_set_call_timeout()</strong></span> function is available
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when OCI8 uses Oracle 18 (or later) Client libraries.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.oci-set-call-timout-parameters">
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<h3 class="title">参数</h3>
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<p class="para">
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<dl>
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<dt>
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<code class="parameter">connection</code></dt>
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<dd>
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<p class="para">Oracle 连接标识，由
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<span class="function"><a href="oci_connect.html" class="function">oci_connect()</a></span>，<span class="function"><a href="oci_pconnect.html" class="function">oci_pconnect()</a></span>，或
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<span class="function"><a href="oci_new_connect.html" class="function">oci_new_connect()</a></span> 返回。</p>
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</dd>
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<dt>
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<code class="parameter">time_out</code></dt>
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<dd>
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<p class="para">
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The maximum time in milliseconds that any single round-trip between PHP and Oracle Database may take.
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</p>
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</dd>
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</dl>
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</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.oci-set-call-timout-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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成功时返回 <strong><code>TRUE</code></strong>， 或者在失败时返回 <strong><code>FALSE</code></strong>。
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.oci-set-call-timout-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-2455">
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<p><strong>Example #1 Setting the timeout</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 />$conn </span><span style="color: #007700">= </span><span style="color: #0000BB">oci_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">'hr'</span><span style="color: #007700">, </span><span style="color: #DD0000">'welcome'</span><span style="color: #007700">, </span><span style="color: #DD0000">'localhost/XE'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">oci_set_call_timeout</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn</span><span style="color: #007700">, </span><span style="color: #0000BB">5000</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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</div>
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</div></div></div></body></html> |