<HTML ><HEAD ><TITLE >get_defined_vars</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="Variable Functions" HREF="ref.variables.html"><LINK REL="PREVIOUS" TITLE="floatval" HREF="function.floatval.html"><LINK REL="NEXT" TITLE="get_resource_type" HREF="function.get-resource-type.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.floatval.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.get-resource-type.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.get-defined-vars" ></A >get_defined_vars</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN93771" ></A ><P > (PHP 4 >= 4.0.4)</P >get_defined_vars -- Returns an array of all defined variables </DIV ><DIV CLASS="refsect1" ><A NAME="AEN93774" ></A ><H2 >Description</H2 >array <B CLASS="methodname" >get_defined_vars</B > ( void)<BR ></BR ><P > This function returns an multidimensional array containing a list of all defined variables, be them environment, server or user-defined variables. <DIV CLASS="informalexample" ><A NAME="AEN93781" ></A ><P ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><PRE CLASS="php" >$b = array(1,1,2,3,5,8); $arr = get_defined_vars(); // print $b print_r($arr["b"]); // print path to the PHP interpreter (if used as a CGI) // e.g. /usr/local/bin/php echo $arr["_"]; // print the command-line paramaters if any print_r($arr["argv"]); // print all the server vars print_r($arr["_SERVER"]); // print all the available keys for the arrays of variables print_r(array_keys(get_defined_vars()));</PRE ></TD ></TR ></TABLE ><P ></P ></DIV > </P ><P > See also <A HREF="function.get-defined-functions.html" ><B CLASS="function" >get_defined_functions()</B ></A > and <A HREF="function.get-defined-constants.html" ><B CLASS="function" >get_defined_constants()</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.floatval.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.get-resource-type.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >floatval</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.variables.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >get_resource_type</TD ></TR ></TABLE ></DIV ></BODY ></HTML >