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<?php $a = ["a", "n", "b"]; $b = ["c", "a", "d"]; print_r(array_merge_($a, $b));
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Call to undefined function array_merge_() in /in/e4XWg:6 Stack trace: #0 {main} thrown in /in/e4XWg on line 6
Process exited with code 255.

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