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func_get_args	function_exists

	Last updated: Sat, 29 Oct 2005

func_num_args

(PHP 4, PHP 5)

func_num_args -- Returns the number of arguments passed to the function

Description

int func_num_args ( void )

Returns the number of arguments passed into the current user-defined function. func_num_args() will generate a warning if called from outside of a user-defined function. This function cannot be used directly as a function parameter. Instead, its result may be assigned to a variable, which can then be passed to the function.

Note: Because this function depends on the current scope to determine parameter details, it cannot be used as a function parameter. If you must pass this value, assign the results to a variable, and pass the variable.


<?php

function foo() 

{

    $numargs = func_num_args();

    echo "Number of arguments: $numargs\n";

} 



foo(1, 2, 3);    // Prints 'Number of arguments: 3'

?>

func_num_args() may be used in conjunction with func_get_arg() and func_get_args() to allow user-defined functions to accept variable-length argument lists.

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func_get_args	function_exists

	Last updated: Sat, 29 Oct 2005

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Last updated: Tue Nov 1 20:20:59 2005 EST