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 function definition.
1
2 <?php
3 function foo() {
4 $numargs = func_num_args();
5 echo "Number of arguments: $numargs\n";
6 }
7
8 foo (1, 2, 3); // Prints 'Number of arguments: 3'
9 ?>
10 |
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.
Note: This function was added in PHP 4.