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<?php function g($txt = '') { $goal = 'g'; $_g = function($str = '') use ($goal, $_g) { if ($str) { return $goal . $str; } $goal .= 'o'; return $_g; }; return $_g($txt); } echo (g())('al');
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $_g in /in/mWag5 on line 5 Fatal error: Uncaught Error: Value of type null is not callable in /in/mWag5:16 Stack trace: #0 {main} thrown in /in/mWag5 on line 16
Process exited with code 255.

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