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<func_get_argsfunction_exists>
Last updated: Mon, 16 Jul 2012

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.

<?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.




<func_get_argsfunction_exists>
 Last updated: Mon, 16 Jul 2012
 
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