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<?php $dis = [45 => 422.555, 67=> 596.555, 72 => 322.55]; asort($dis); key($dis[0]);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined array key 0 in /in/rJZEr on line 5 Fatal error: Uncaught TypeError: key(): Argument #1 ($array) must be of type array, null given in /in/rJZEr:5 Stack trace: #0 /in/rJZEr(5): key(NULL) #1 {main} thrown in /in/rJZEr on line 5
Process exited with code 255.

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