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<?php $abc = function($code){ $function_A = function($code){ return $code; }; $function_B = function($code) use (&$function_A) { global $function_A; $text = $function_A($code); return $text; }; $function_B($code); }; echo $abc('abc');
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Value of type null is not callable in /in/JN7pl:11 Stack trace: #0 /in/JN7pl(15): {closure}('abc') #1 /in/JN7pl(19): {closure}('abc') #2 {main} thrown in /in/JN7pl on line 11
Process exited with code 255.

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