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<?php //No constructor class Foo {} $a = null; $f = new Foo($a = 123); var_dump($a); // NULL as expected
Output for 7.1.0
int(123)
Output for 4.3.0 - 5.0.5, 5.1.1 - 7.0.14
NULL
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/1nUFe on line 8
Process exited with code 255.