<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >time_nanosleep</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="Miscellaneous Functions" HREF="ref.misc.html"><LINK REL="PREVIOUS" TITLE="sys_getloadavg" HREF="function.sys-getloadavg.html"><LINK REL="NEXT" TITLE="time_sleep_until" HREF="function.time-sleep-until.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.sys-getloadavg.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.time-sleep-until.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.time-nanosleep" ></A >time_nanosleep</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN126115" ></A ><P > (PHP 5)</P >time_nanosleep -- Delay for a number of seconds and nanoseconds</DIV ><DIV CLASS="refsect1" ><A NAME="AEN126118" ></A ><H2 >说明</H2 >mixed <B CLASS="methodname" >time_nanosleep</B > ( int seconds, int nanoseconds )<BR ></BR ><P > Delays program execution for the given number of <CODE CLASS="parameter" >seconds</CODE > and <CODE CLASS="parameter" >nanoseconds</CODE >. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN126132" ></A ><H2 >参数</H2 ><P > <P ></P ><DIV CLASS="variablelist" ><DL ><DT ><CODE CLASS="parameter" >seconds</CODE ></DT ><DD ><P > Must be a positive integer. </P ></DD ><DT ><CODE CLASS="parameter" >nanoseconds</CODE ></DT ><DD ><P > Must be a positive integer less than 1 billion. </P ></DD ></DL ></DIV > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN126146" ></A ><H2 >返回值</H2 ><P > 如果成功则返回 <TT CLASS="constant" ><B >TRUE</B ></TT >,失败则返回 <TT CLASS="constant" ><B >FALSE</B ></TT >。 </P ><P > If the delay was interrupted by a signal, an associative array will be returned with the components: <P ></P ><UL ><LI ><P > <TT CLASS="literal" >seconds</TT > - number of seconds remaining in the delay </P ></LI ><LI ><P > <TT CLASS="literal" >nanoseconds</TT > - number of nanoseconds remaining in the delay </P ></LI ></UL > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN126159" ></A ><H2 >范例</H2 ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN126162" ></A ><P ><B >例 1. <B CLASS="function" >time_nanosleep()</B > example</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br /></font><font color="#FF8000">// Careful! This won't work as expected if an array is returned<br /></font><font color="#007700">if (</font><font color="#0000BB">time_nanosleep</font><font color="#007700">(</font><font color="#0000BB">0</font><font color="#007700">, </font><font color="#0000BB">500000000</font><font color="#007700">)) {<br /> echo </font><font color="#DD0000">"Slept for half a second.\n"</font><font color="#007700">;<br />}<br /><br /></font><font color="#FF8000">// This is better:<br /></font><font color="#007700">if (</font><font color="#0000BB">time_nanosleep</font><font color="#007700">(</font><font color="#0000BB">0</font><font color="#007700">, </font><font color="#0000BB">500000000</font><font color="#007700">) === </font><font color="#0000BB">true</font><font color="#007700">) {<br /> echo </font><font color="#DD0000">"Slept for half a second.\n"</font><font color="#007700">;<br />}<br /><br /></font><font color="#FF8000">// And this is the best:<br /></font><font color="#0000BB">$nano </font><font color="#007700">= </font><font color="#0000BB">time_nanosleep</font><font color="#007700">(</font><font color="#0000BB">2</font><font color="#007700">, </font><font color="#0000BB">100000</font><font color="#007700">);<br /><br />if (</font><font color="#0000BB">$nano </font><font color="#007700">=== </font><font color="#0000BB">true</font><font color="#007700">) {<br /> echo </font><font color="#DD0000">"Slept for 2 seconds, 100 milliseconds.\n"</font><font color="#007700">;<br />} elseif (</font><font color="#0000BB">$nano </font><font color="#007700">=== </font><font color="#0000BB">false</font><font color="#007700">) {<br /> echo </font><font color="#DD0000">"Sleeping failed.\n"</font><font color="#007700">;<br />} elseif (</font><font color="#0000BB">is_array</font><font color="#007700">(</font><font color="#0000BB">$nano</font><font color="#007700">)) {<br /> </font><font color="#0000BB">$seconds </font><font color="#007700">= </font><font color="#0000BB">$nano</font><font color="#007700">[</font><font color="#DD0000">'seconds'</font><font color="#007700">];<br /> </font><font color="#0000BB">$nanoseconds </font><font color="#007700">= </font><font color="#0000BB">$nano</font><font color="#007700">[</font><font color="#DD0000">'nanoseconds'</font><font color="#007700">];<br /> echo </font><font color="#DD0000">"Interrupted by a signal.\n"</font><font color="#007700">;<br /> echo </font><font color="#DD0000">"Time remaining: $seconds seconds, $nanoseconds nanoseconds."</font><font color="#007700">;<br />}<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN126166" ></A ><H2 >注释</H2 ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >注意: </B >本函数未在 Windows 平台下实现。</P ></BLOCKQUOTE ></DIV ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN126170" ></A ><H2 >参见</H2 ><P > <A HREF="function.sleep.html" ><B CLASS="function" >sleep()</B ></A >, <A HREF="function.usleep.html" ><B CLASS="function" >usleep()</B ></A >, <A HREF="function.set-time-limit.html" ><B CLASS="function" >set_time_limit()</B ></A > </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.sys-getloadavg.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.time-sleep-until.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >sys_getloadavg</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.misc.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >time_sleep_until</TD ></TR ></TABLE ></DIV ></BODY ></HTML >