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<?php $array = array_combine(range(1, 10), range(1, 10)); $array = array(custom => 'custom')+$array; print_r($array);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Undefined constant "custom" in /in/CgbcX:3 Stack trace: #0 {main} thrown in /in/CgbcX on line 3
Process exited with code 255.

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