<HTML ><HEAD ><TITLE >chroot</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="Directory functions" HREF="ref.dir.html"><LINK REL="PREVIOUS" TITLE="chdir" HREF="function.chdir.html"><LINK REL="NEXT" TITLE="dir" HREF="class.dir.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.chdir.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="class.dir.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.chroot" ></A >chroot</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN19929" ></A ><P > (PHP 4 >= 4.0.5)</P >chroot -- Change the root directory</DIV ><DIV CLASS="refsect1" ><A NAME="AEN19932" ></A ><H2 >Description</H2 >bool <B CLASS="methodname" >chroot</B > ( string directory)<BR ></BR ><P > Changes the root directory of the current process to <TT CLASS="parameter" ><I >directory</I ></TT >. Returns <TT CLASS="constant" ><B >TRUE</B ></TT > on success or <TT CLASS="constant" ><B >FALSE</B ></TT > on failure.. </P ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >Note: </B > It's not wise to use this function when running in a webserver environment, because it's not possible to reset the root directory to / again at the end of the request. This function will only function correct when you run PHP as command line too. (CLI) </P ></BLOCKQUOTE ></DIV ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >Note: </B >This function is not implemented on Windows platforms.</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.chdir.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="class.dir.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >chdir</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.dir.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >dir</TD ></TR ></TABLE ></DIV ></BODY ></HTML >