<HTML ><HEAD ><TITLE >sem_remove</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="Semaphore, Shared Memory and IPC Functions" HREF="ref.sem.html"><LINK REL="PREVIOUS" TITLE="sem_release" HREF="function.sem-release.html"><LINK REL="NEXT" TITLE="shm_attach" HREF="function.shm-attach.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.sem-release.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.shm-attach.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.sem-remove" ></A >sem_remove</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN82671" ></A ><P > (PHP 4 >= 4.1.0)</P >sem_remove -- Remove a semaphore</DIV ><DIV CLASS="refsect1" ><A NAME="AEN82674" ></A ><H2 >Description</H2 >bool <B CLASS="methodname" >sem_remove</B > ( int sem_identifier)<BR ></BR ><P > Returns: <TT CLASS="constant" ><B >TRUE</B ></TT > on success, <TT CLASS="constant" ><B >FALSE</B ></TT > on error. </P ><P > <B CLASS="function" >sem_remove()</B > removes the semaphore <TT CLASS="parameter" ><I >sem_identifier</I ></TT > if it has been created by <A HREF="function.sem-get.html" ><B CLASS="function" >sem_get()</B ></A >, otherwise generates a warning. </P ><P > After removing the semaphore, it is no more accessible. </P ><P > See also: <A HREF="function.sem-get.html" ><B CLASS="function" >sem_get()</B ></A >, <A HREF="function.sem-release.html" ><B CLASS="function" >sem_release()</B ></A > and <A HREF="function.sem-acquire.html" ><B CLASS="function" >sem_acquire()</B ></A >. </P ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >Note: </B > This function does not work on Windows systems. It was added on PHP 4.1.0. </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.sem-release.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="function.shm-attach.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >sem_release</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.sem.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >shm_attach</TD ></TR ></TABLE ></DIV ></BODY ></HTML >