001+ Warning: array_diff_key() expects parameter 2 to be a valid callback, array must have exactly two members in %s/array_diff_key2.php on line 5
002+
003+ Warning: array_diff_key() expects parameter 2 to be a valid callback, array must have exactly two members in %s/array_diff_key2.php on line 6
004+
005+ Warning: array_diff_key() expects parameter 2 to be a valid callback, array must have exactly two members in %s/array_diff_key2.php on line 7
006+
007+ Warning: array_diff_key() expects parameter 3 to be a valid callback, array must have exactly two members in %s/array_diff_key2.php on line 8
003- array(2) {
004- ["b"]=>
005- string(5) "brown"
006- ["c"]=>
007- string(4) "blue"
008- }
010+ NULL
010- array(2) {
011- ["b"]=>
012- string(5) "brown"
013- ["c"]=>
014- string(4) "blue"
015- }
012+ NULL
014+ NULL
016+ NULL
017- array(1) {
018- [2]=>
019- bool(true)
020- }
022- array(2) {
023- ["b"]=>
024- string(5) "brown"
025- ["c"]=>
026- string(4) "blue"
027- }