--TEST-- Test preg_match_all() function : error conditions - wrong arg types --FILE-- getMessage(), "\n"; } var_dump($matches); } echo "Done"; ?> --EXPECT-- *** Testing preg_match_all() : error conditions *** Arg value is: Array preg_match_all(): Argument #2 ($subject) must be of type string, array given NULL Arg value is: test int(4) array(1) { [0]=> array(4) { [0]=> string(1) "t" [1]=> string(1) "e" [2]=> string(1) "s" [3]=> string(1) "t" } } Done