<HTML ><HEAD ><TITLE >chgrp</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="Filesystem functions" HREF="ref.filesystem.html"><LINK REL="PREVIOUS" TITLE="basename" HREF="function.basename.html"><LINK REL="NEXT" TITLE="chmod" HREF="function.chmod.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.basename.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.chmod.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.chgrp" ></A >chgrp</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN24998" ></A ><P > (PHP 3, PHP 4 )</P >chgrp -- Changes file group</DIV ><DIV CLASS="refsect1" ><A NAME="AEN25001" ></A ><H2 >Description</H2 >int <B CLASS="methodname" >chgrp</B > ( string filename, mixed group)<BR ></BR ><P > Attempts to change the group of the file <TT CLASS="parameter" ><I >filename</I ></TT > to <TT CLASS="parameter" ><I >group</I ></TT > (specified by name or number). Only the superuser may change the group of a file arbitrarily; other users may change the group of a file to any group of which that user is a member. </P ><P > Returns <TT CLASS="constant" ><B >TRUE</B ></TT > on success or <TT CLASS="constant" ><B >FALSE</B ></TT > on failure. </P ><P > See also <A HREF="function.chown.html" ><B CLASS="function" >chown()</B ></A > and <A HREF="function.chmod.html" ><B CLASS="function" >chmod()</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.basename.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.chmod.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >basename</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.filesystem.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >chmod</TD ></TR ></TABLE ></DIV ></BODY ></HTML >