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<?php function testCallback(\Closure $callback) { $wat = true; $callback('test'); } $data = "\n"; testCallback(function($msg) use ($data, $wat) { if ($wat) echo $msg . $data; } );
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $wat in /in/eZoLk on line 9

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