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<?php class D{} $a = array(1,2,3); var_dump(array_multisort(SORT_REGULAR, $a));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught TypeError: array_multisort(): Argument #1 ($array) must be an array or a sort flag that has not already been specified in /in/j7UUR:6 Stack trace: #0 /in/j7UUR(6): array_multisort(0, Array) #1 {main} thrown in /in/j7UUR on line 6
Process exited with code 255.
Output for 4.3.2 - 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, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Warning: array_multisort(): Argument #1 is expected to be an array or sorting flag that has not already been specified in /in/j7UUR on line 6 bool(false)
Output for 4.3.0 - 4.3.1
Warning: array_multisort() [http://www.php.net/function.array-multisort]: Argument #1 is expected to be an array or sorting flag that has not already been specified in /in/j7UUR on line 6 bool(false)

preferences:
218.65 ms | 401 KiB | 307 Q