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74 lines
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HTML
74 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>返回当前的 Unix 时间戳</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.time" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">time</h1>
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<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">time</span> — <span class="dc-title">返回当前的 Unix 时间戳</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.time-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>time</strong></span>
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( <span class="methodparam">void</span>
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) : <span class="type">int</span></div>
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<p class="para rdfs-comment">
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返回自从 Unix 纪元（格林威治时间 1970 年 1 月 1 日 00:00:00）到当前时间的秒数。
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.time-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-2737">
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<p><strong>Example #1 <span class="function"><strong>time()</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 />$nextWeek </span><span style="color: #007700">= </span><span style="color: #0000BB">time</span><span style="color: #007700">() + (</span><span style="color: #0000BB">7 </span><span style="color: #007700">* </span><span style="color: #0000BB">24 </span><span style="color: #007700">* </span><span style="color: #0000BB">60 </span><span style="color: #007700">* </span><span style="color: #0000BB">60</span><span style="color: #007700">);<br /> </span><span style="color: #FF8000">// 7 days; 24 hours; 60 mins; 60 secs<br /></span><span style="color: #007700">echo </span><span style="color: #DD0000">'Now: '</span><span style="color: #007700">. </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">'Y-m-d'</span><span style="color: #007700">) .</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />echo </span><span style="color: #DD0000">'Next Week: '</span><span style="color: #007700">. </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">'Y-m-d'</span><span style="color: #007700">, </span><span style="color: #0000BB">$nextWeek</span><span style="color: #007700">) .</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /></span><span style="color: #FF8000">// or using strtotime():<br /></span><span style="color: #007700">echo </span><span style="color: #DD0000">'Next Week: '</span><span style="color: #007700">. </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">'Y-m-d'</span><span style="color: #007700">, </span><span style="color: #0000BB">strtotime</span><span style="color: #007700">(</span><span style="color: #DD0000">'+1 week'</span><span style="color: #007700">)) .</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<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 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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Now: 2005-03-30
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Next Week: 2005-04-06
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Next Week: 2005-04-06
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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 notes" id="refsect1-function.time-notes">
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<h3 class="title">注释</h3>
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<div class="tip"><strong class="tip">Tip</strong>
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<p class="para">
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自 PHP 5.1 起在 <var class="varname"><var class="varname"><a href="reserved.variables.server.html" class="classname">$_SERVER['REQUEST_TIME']</a></var></var>
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中保存了发起该请求时刻的时间戳。
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</p>
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</div>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.time-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"><span class="function"><a href="date.html" class="function" rel="rdfs-seeAlso">date()</a> - 格式化一个本地时间／日期</span></li>
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<li class="member"><span class="function"><a href="microtime.html" class="function" rel="rdfs-seeAlso">microtime()</a> - 返回当前 Unix 时间戳和微秒数</span></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> |