PHP 忒聊
綴豖
ヶ輛
func_num_args
(PHP 4)
Description
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.
綴豖
れ萸
ヶ輛
func_get_args
奻珨撰
function_exists