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<?php usort($accounts, function($a, $b) { return ($a->first_name == $b->first_name ? strcmp($a->last_name, $b->last_name) : strcmp($a->first_name, $b->first_name)); });
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: usort(): Argument #1 ($array) must be of type array, null given in /in/sRXfH:2 Stack trace: #0 /in/sRXfH(2): usort(NULL, Object(Closure)) #1 {main} thrown in /in/sRXfH on line 2
Process exited with code 255.

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