<HTML ><HEAD ><TITLE >usleep</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="PHP Manual" HREF="index.html"><LINK REL="UP" TITLE="Miscellaneous functions" HREF="ref.misc.html"><LINK REL="PREVIOUS" TITLE="unpack" HREF="function.unpack.html"><LINK REL="NEXT" TITLE="mnoGoSearch Functions" HREF="ref.mnogo.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=ISO-8859-1"></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 Manual</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.unpack.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="ref.mnogo.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.usleep" ></A >usleep</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN55855" ></A ><P > (PHP 3, PHP 4 )</P >usleep -- Delay execution in microseconds</DIV ><DIV CLASS="refsect1" ><A NAME="AEN55858" ></A ><H2 >Description</H2 >void <B CLASS="methodname" >usleep</B > ( int micro_seconds)<BR ></BR ><P > The <B CLASS="function" >usleep()</B > function delays program execution for the given number of <TT CLASS="parameter" ><I >micro_seconds</I ></TT >. A microsecond is one millionth of a second. </P ><P > See also <A HREF="function.sleep.html" ><B CLASS="function" >sleep()</B ></A > and <A HREF="function.set-time-limit.html" ><B CLASS="function" >set_time_limit()</B ></A >. </P ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >Note: </B > This function does not work on Windows systems. </P ></BLOCKQUOTE ></DIV ></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.unpack.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="ref.mnogo.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >unpack</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.misc.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >mnoGoSearch Functions</TD ></TR ></TABLE ></DIV ></BODY ></HTML >