function.sleep.html
来自「php的帮助文档,涉及到PHP的案例和基本语法,以及实际应用内容」· HTML 代码 · 共 118 行
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Delay execution</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.show-source.html">show_source</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.sys-getloadavg.html">sys_getloadavg</a></div> <div class="up"><a href="ref.misc.html">Misc. Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.sleep" class="refentry"> <div class="refnamediv"> <h1 class="refname">sleep</h1> <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">sleep</span> — <span class="dc-title">Delay execution</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">int</span> <span class="methodname"><b><b>sleep</b></b></span> ( <span class="methodparam"><span class="type">int</span> <tt class="parameter">$seconds</tt></span> )</div> <p class="simpara"> Delays the program execution for the given number of <i><tt class="parameter">seconds</tt></i>. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">seconds</tt></i></span> <dd> <p class="para"> Halt time in seconds. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns zero on success, or <b><tt>FALSE</tt></b> on errors. </p> </div> <div class="refsect1 errors"> <h3 class="title">Errors/Exceptions</h3> <p class="para"> If the specified number of <i><tt class="parameter">seconds</tt></i> is negative, this function will generate a <b><tt>E_WARNING</tt></b>. </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 <b>sleep()</b> example</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /><br /></span><span style="color: #FF8000">// current time<br /></span><span style="color: #007700">echo </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">'h:i:s'</span><span style="color: #007700">) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">// sleep for 10 seconds<br /></span><span style="color: #0000BB">sleep</span><span style="color: #007700">(</span><span style="color: #0000BB">10</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// wake up !<br /></span><span style="color: #007700">echo </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">'h:i:s'</span><span style="color: #007700">) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">?></span></span></code></div> </div> <div class="example-contents"><p> This example will output (after 10 seconds) </p></div> <div class="example-contents"><pre><div class="cdata"><pre>05:31:2305:31:33</pre></div> </pre></div> </div> </p> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> <a href="function.usleep.html" class="function" rel="rdfs-seeAlso">usleep()</a>, <a href="function.set-time-limit.html" class="function" rel="rdfs-seeAlso">set_time_limit()</a> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.show-source.html">show_source</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.sys-getloadavg.html">sys_getloadavg</a></div> <div class="up"><a href="ref.misc.html">Misc. Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 快捷键说明
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