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<?php set_error_handler(function(){echo "++++";}); array_keys(1);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: array_keys(): Argument #1 ($array) must be of type array, int given in /in/BNPn1:6 Stack trace: #0 /in/BNPn1(6): array_keys(1) #1 {main} thrown in /in/BNPn1 on line 6
Process exited with code 255.

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