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<?php $i1 = str_split("abc"); $i1 = str_split("adcd"); print_r( array_diff($i1,$i2)); ?>
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $i2 in /in/ClYIE on line 5 Fatal error: Uncaught TypeError: array_diff(): Argument #2 must be of type array, null given in /in/ClYIE:5 Stack trace: #0 /in/ClYIE(5): array_diff(Array, NULL) #1 {main} thrown in /in/ClYIE on line 5
Process exited with code 255.

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