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70 lines
2.0 KiB
HTML
70 lines
2.0 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 the timestamp of the first sample from rrd file</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.rrd-first" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">rrd_first</h1>
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<p class="verinfo">(PECL rrd >= 0.9.0)</p><p class="refpurpose"><span class="refname">rrd_first</span> — <span class="dc-title">Gets the timestamp of the first sample from rrd file</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.rrd-first-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>rrd_first</strong></span>
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( <span class="methodparam"><span class="type">string</span> <code class="parameter">$file</code></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$raaindex</code><span class="initializer"> = 0</span></span>
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] ) : <span class="type">int</span></div>
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<p class="para rdfs-comment">
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Returns the first data sample from the specified RRA of the RRD file.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.rrd-first-parameters">
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<h3 class="title">参数</h3>
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<dl>
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<dt>
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<code class="parameter">file</code></dt>
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<dd>
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<p class="para">
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RRD database file name.
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</p>
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</dd>
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<dt>
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<code class="parameter">raaindex</code></dt>
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<dd>
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<p class="para">
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The index number of the RRA that is to be examined. Default value is 0.
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</p>
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</dd>
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</dl>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.rrd-first-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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Integer number of unix timestamp, <strong><code>FALSE</code></strong> if some error occurs.
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</p>
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</div>
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</div></div></div></body></html> |