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<?php $placeholders = array_map(function($key) { return sprintf(':%s', $key); }, $keys);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $keys in /in/EAmCM on line 6 Fatal error: Uncaught TypeError: array_map(): Argument #2 ($array) must be of type array, null given in /in/EAmCM:3 Stack trace: #0 /in/EAmCM(3): array_map(Object(Closure), NULL) #1 {main} thrown in /in/EAmCM on line 3
Process exited with code 255.

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