<HTML ><HEAD ><TITLE >filegroup</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.44"><LINK REL="HOME" TITLE="PHP Manual" HREF="manual.html"><LINK REL="UP" TITLE="Filesystem functions" HREF="ref.filesystem.html"><LINK REL="PREVIOUS" TITLE="filectime" HREF="function.filectime.html"><LINK REL="NEXT" TITLE="fileinode" HREF="function.fileinode.html"></HEAD ><BODY BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><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.filectime.html" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.fileinode.html" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.filegroup" >filegroup</A ></H1 ><DIV CLASS="refnamediv" ><A NAME="AEN8637" ></A >filegroup -- Get file group</DIV ><DIV CLASS="refsect1" ><A NAME="AEN8640" ></A ><H2 >Description</H2 ><DIV CLASS="funcsynopsis" ><P ></P ><CODE CLASS="FUNCDEF" >int filegroup</CODE >(string filename);<P ></P ></DIV ><P > Returns the group ID of the owner of the file, or false in case of an error. The group ID is returned in numerical format, use <A HREF="function.posix-getgrgid.html" ><B CLASS="function" >posix_getgrgid()</B ></A > to resolve it to a group name. </P ><P > The results of this function are cached. See <A HREF="function.clearstatcache.html" ><B CLASS="function" >clearstatcache()</B ></A > for more details. </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 WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="function.filectime.html" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="manual.html" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.fileinode.html" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >filectime</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.filesystem.html" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >fileinode</TD ></TR ></TABLE ></DIV ></BODY ></HTML >