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 function definition.
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.