PHP Manual
Prev |  | Next

# func_num_args

(PHP 4 )

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.

    <?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.

Prev | Home | Next
func_get_args | Up | function_exists