<HTML ><HEAD ><TITLE >func_num_args</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="Function Handling functions" HREF="ref.funchand.html"><LINK REL="PREVIOUS" TITLE="func_get_args" HREF="function.func-get-args.html"><LINK REL="NEXT" TITLE="function_exists" HREF="function.function-exists.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.func-get-args.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.function-exists.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.func-num-args" ></A >func_num_args</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN29302" ></A ><P > (PHP 4 )</P >func_num_args -- Returns the number of arguments passed to the function </DIV ><DIV CLASS="refsect1" ><A NAME="AEN29305" ></A ><H2 >Description</H2 >int <B CLASS="methodname" >func_num_args</B > ( void)<BR ></BR ><P > Returns the number of arguments passed into the current user-defined function. <B CLASS="function" >func_num_args()</B > will generate a warning if called from outside of a user-defined function. </P ><P > <DIV CLASS="informalexample" ><A NAME="AEN29314" ></A ><P ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><PRE CLASS="php" ><?php function foo() { $numargs = func_num_args(); echo "Number of arguments: $numargs\n"; } foo (1, 2, 3); // Prints 'Number of arguments: 3' ?></PRE ></TD ></TR ></TABLE ><P ></P ></DIV > </P ><P > <B CLASS="function" >func_num_args()</B > may be used in conjunction with <A HREF="function.func-get-arg.html" ><B CLASS="function" >func_get_arg()</B ></A > and <A HREF="function.func-get-args.html" ><B CLASS="function" >func_get_args()</B ></A > to allow user-defined functions to accept variable-length argument lists. </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.func-get-args.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.function-exists.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >func_get_args</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.funchand.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >function_exists</TD ></TR ></TABLE ></DIV ></BODY ></HTML >