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<?php $b = function($a) use($b) { if ($a < 10) { $b($a+1); echo $a; } }; $b(0);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $b in /in/6aSaO on line 3 Fatal error: Uncaught Error: Value of type null is not callable in /in/6aSaO:5 Stack trace: #0 /in/6aSaO(10): {closure}(0) #1 {main} thrown in /in/6aSaO on line 5
Process exited with code 255.

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