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<?php $arr = array("D"=>"dog","a"=>"cat","A"=>"moose","d"=>"mouse"); ksort($arr, 'SORT_FLAG_CASE'); var_dump($arr);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: ksort(): Argument #2 ($flags) must be of type int, string given in /in/VqRD1:6 Stack trace: #0 /in/VqRD1(6): ksort(Array, 'SORT_FLAG_CASE') #1 {main} thrown in /in/VqRD1 on line 6
Process exited with code 255.
Output for 7.3.12 - 7.3.33, 7.4.0 - 7.4.33
Warning: ksort() expects parameter 2 to be int, string given in /in/VqRD1 on line 6 array(4) { ["D"]=> string(3) "dog" ["a"]=> string(3) "cat" ["A"]=> string(5) "moose" ["d"]=> string(5) "mouse" }
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33
Warning: ksort() expects parameter 2 to be integer, string given in /in/VqRD1 on line 6 array(4) { ["D"]=> string(3) "dog" ["a"]=> string(3) "cat" ["A"]=> string(5) "moose" ["d"]=> string(5) "mouse" }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
Warning: ksort() expects parameter 2 to be long, string given in /in/VqRD1 on line 6 array(4) { ["D"]=> string(3) "dog" ["a"]=> string(3) "cat" ["A"]=> string(5) "moose" ["d"]=> string(5) "mouse" }

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