📄 function.pcntl-setpriority.html
字号:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Change the priority of any process</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.pcntl-getpriority.html">pcntl_getpriority</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.pcntl-signal.html">pcntl_signal</a></div> <div class="up"><a href="ref.pcntl.html">PCNTL Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.pcntl-setpriority" class="refentry"> <div class="refnamediv"> <h1 class="refname">pcntl_setpriority</h1> <p class="verinfo">(PHP 5)</p><p class="refpurpose"><span class="refname">pcntl_setpriority</span> — <span class="dc-title">Change the priority of any process</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><b>pcntl_setpriority</b></b></span> ( <span class="methodparam"><span class="type">int</span> <tt class="parameter">$priority</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$pid</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$process_identifier</tt></span> ]] )</div> <p class="para rdfs-comment"> <b>pcntl_setpriority()</b> sets the priority of <i><tt class="parameter">pid</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">priority</tt></i></span> <dd> <p class="para"> <i><tt class="parameter">priority</tt></i> is generally a value in the range <i>-20</i> to <i>20</i>. The default priority is <i>0</i> while a lower numerical value causes more favorable scheduling. Because priority levels can differ between system types and kernel versions, please see your system's setpriority(2) man page for specific details. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">pid</tt></i></span> <dd> <p class="para"> If not specified, the pid of the current process is used. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">process_identifier</tt></i></span> <dd> <p class="para"> One of <b><tt>PRIO_PGRP</tt></b>, <b><tt>PRIO_USER</tt></b> or <b><tt>PRIO_PROCESS</tt></b>. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns <b><tt>TRUE</tt></b> on success or <b><tt>FALSE</tt></b> on failure. </p> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><a href="function.pcntl-getpriority.html" class="function" rel="rdfs-seeAlso">pcntl_getpriority()</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.pcntl-getpriority.html">pcntl_getpriority</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.pcntl-signal.html">pcntl_signal</a></div> <div class="up"><a href="ref.pcntl.html">PCNTL Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -