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Bugs & Features
<?php var_dump(array_sum(null));
Output for 5.3.0 - 7.3.0beta1
Warning: array_sum() expects parameter 1 to be array, null given in /in/Jlq6q on line 3 NULL
Output for 4.3.2 - 5.2.17
Warning: array_sum(): The argument should be an array in /in/Jlq6q on line 3 NULL
Output for 4.3.0 - 4.3.1
Warning: array_sum() [http://www.php.net/function.array-sum]: The argument should be an array in /in/Jlq6q on line 3 NULL