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run code in 150+ php & hhvm versions
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<?php $a = array('a', (PHP_INT_MAX) => 'b', 'a' => 'b','c'); //unset($a[4]); //unset($a[5]); ///$a[4] = 'clement'; // array_push($a, 'c'); var_dump($a);
based on meO6Y
Output for 5.6.28, 7.0.14 - 7.1.0
Warning: Cannot add element to the array as the next element is already occupied in /in/KUa5K on line 2 Warning: array_push(): Cannot add element to the array as the next element is already occupied in /in/KUa5K on line 7 array(3) { [0]=> string(1) "a" [9223372036854775807]=> string(1) "b" ["a"]=> string(1) "b" }
Output for 5.2.10 - 5.6.21, 7.0.0 - 7.0.6
Warning: array_push(): Cannot add element to the array as the next element is already occupied in /in/KUa5K on line 7 array(3) { [0]=> string(1) "a" [9223372036854775807]=> string(1) "b" ["a"]=> string(1) "b" }
Output for 4.4.0 - 4.4.9, 5.0.5 - 5.2.9
array(5) { [0]=> string(1) "a" [9223372036854775807]=> string(1) "b" ["a"]=> string(1) "b" [-9223372036854775808]=> string(1) "c" [-9223372036854775807]=> string(1) "c" }
Output for 4.3.0 - 4.3.11, 5.0.0 - 5.0.4
Notice: Use of undefined constant PHP_INT_MAX - assumed 'PHP_INT_MAX' in /in/KUa5K on line 2 array(5) { [0]=> string(1) "a" ["PHP_INT_MAX"]=> string(1) "b" ["a"]=> string(1) "b" [1]=> string(1) "c" [2]=> string(1) "c" }