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<?php $selected=array('11a_Ma1','11a_Sc2','11b_Ls1'); $already=array('11SJP','11a_Ma1','11a_Sc2'); print_r(array_diff($selected,$alreasy));
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $alreasy in /in/gVgOT on line 4 Fatal error: Uncaught TypeError: array_diff(): Argument #2 must be of type array, null given in /in/gVgOT:4 Stack trace: #0 /in/gVgOT(4): array_diff(Array, NULL) #1 {main} thrown in /in/gVgOT on line 4
Process exited with code 255.

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