<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >pcntl_getpriority</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="PHP 手册" HREF="index.html"><LINK REL="UP" TITLE="Process Control Functions" HREF="ref.pcntl.html"><LINK REL="PREVIOUS" TITLE="pcntl_fork" HREF="function.pcntl-fork.html"><LINK REL="NEXT" TITLE="pcntl_setpriority" HREF="function.pcntl-setpriority.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=UTF-8"></HEAD ><BODY CLASS="refentry" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >PHP 手册</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.pcntl-fork.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.pcntl-setpriority.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.pcntl-getpriority" ></A >pcntl_getpriority</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN169936" ></A ><P > (PHP 5)</P >pcntl_getpriority -- Get the priority of any process</DIV ><DIV CLASS="refsect1" ><A NAME="AEN169939" ></A ><H2 >说明</H2 >int <B CLASS="methodname" >pcntl_getpriority</B > ( [int pid [, int process_identifier]] )<BR ></BR ><P > <B CLASS="function" >pcntl_getpriority()</B > gets the priority of <CODE CLASS="parameter" >pid</CODE >. Because priority levels can differ between system types and kernel versions, please see your system's getpriority(2) man page for specific details. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN169953" ></A ><H2 >参数</H2 ><P > <P ></P ><DIV CLASS="variablelist" ><DL ><DT ><CODE CLASS="parameter" >pid</CODE ></DT ><DD ><P > If not specified, the pid of the current process is used. </P ></DD ><DT ><CODE CLASS="parameter" >process_identifier</CODE ></DT ><DD ><P > One of <TT CLASS="constant" ><B >PRIO_PGRP</B ></TT >, <TT CLASS="constant" ><B >PRIO_USER</B ></TT > or <TT CLASS="constant" ><B >PRIO_PROCESS</B ></TT >. </P ></DD ></DL ></DIV > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN169970" ></A ><H2 >返回值</H2 ><P > <B CLASS="function" >pcntl_getpriority()</B > returns the priority of the process or <TT CLASS="constant" ><B >FALSE</B ></TT > on error. A lower numerical value causes more favorable scheduling. </P ><DIV CLASS="warning" ><P ></P ><TABLE CLASS="warning" BORDER="1" WIDTH="100%" ><TR ><TD ALIGN="CENTER" ><B >警告</B ></TD ></TR ><TR ><TD ALIGN="LEFT" ><P >本函数可能返回布尔值 <TT CLASS="constant" ><B >FALSE</B ></TT >,但也可能返回一个与 <TT CLASS="constant" ><B >FALSE</B ></TT > 等值的非布尔值,例如 <TT CLASS="literal" >0</TT > 或者 ""。请参阅<A HREF="language.types.boolean.html" >布尔类型</A >章节以获取更多信息。应使用 <A HREF="language.operators.comparison.html" >=== 运算符</A >来测试本函数的返回值。</P ></TD ></TR ></TABLE ></DIV ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN169982" ></A ><H2 >参见</H2 ><P > <P ></P ><TABLE BORDER="0" ><TBODY ><TR ><TD ><A HREF="function.pcntl-setpriority.html" ><B CLASS="function" >pcntl_setpriority()</B ></A ></TD ></TR ></TBODY ></TABLE ><P ></P > </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="function.pcntl-fork.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >起始页</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.pcntl-setpriority.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >pcntl_fork</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.pcntl.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >pcntl_setpriority</TD ></TR ></TABLE ></DIV ></BODY ></HTML >