Category arrays

 Arrays in PHP are simplified. Output: array(3) { [0]=> string(3) “WSJ” [1]=> string(3) “WEF” [2]=> string(2) “NT” } string(2) “NT” array(3) { [1]=> string(3) “WSJ” [2]=> string(3) “WEF” [3]=> string(2) “NT” } array(3) { [“one”]=> string(3) “WSJ” [“two”]=> string(3) “WEF” [“three”]=>…