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<?php function f() { var_dump(func_get_args()); } call_user_func('f', 'a'); call_user_func('f', 'a', 'b'); call_user_func('f', 'a', 'b', 'c', 'd', 'e');
Output for 4.3.0 - 7.1.7
array(1) { [0]=> string(1) "a" } array(2) { [0]=> string(1) "a" [1]=> string(1) "b" } array(5) { [0]=> string(1) "a" [1]=> string(1) "b" [2]=> string(1) "c" [3]=> string(1) "d" [4]=> string(1) "e" }