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<?php function foo($x) { return $x === $x(); } $a = function() { return true; }; $a = 'strcmp("", "")'; echo foo($a);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Call to undefined function strcmp("", "")() in /in/Pkq0q:4 Stack trace: #0 /in/Pkq0q(13): foo('strcmp("", "")') #1 {main} thrown in /in/Pkq0q on line 4
Process exited with code 255.

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