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<?php $v = 18; function f( &$p ) { $p = 36; return $p; } echo call_user_func_array('f',array(&$v)); // 36
Output for 4.3.0 - 5.0.5, 5.1.1 - 7.1.0
36
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/lcUQG on line 7
Process exited with code 255.