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<?php $array1 = array(1,2); $array1 = array(1,2,1); if(empty(array_diff($array1, $array2))) { echo 'both arrays containing the same set of values'; }
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $array2 in /in/6MJvq on line 6 Fatal error: Uncaught TypeError: array_diff(): Argument #2 must be of type array, null given in /in/6MJvq:6 Stack trace: #0 /in/6MJvq(6): array_diff(Array, NULL) #1 {main} thrown in /in/6MJvq on line 6
Process exited with code 255.

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