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<?php class Foo {} $a = null; $f = new Foo($a = 123); var_dump($a); // NULL class Bar { function __constructor(){} } $b = null; $g = new Bar($b = 123); var_dump($b); // int(123)
Output for hhvm-3.10.0 - 3.12.0, 7.1.0
int(123) int(123)
Output for 4.3.0 - 5.0.5, 5.1.1 - 5.6.25, 7.0.0 - 7.0.14
NULL NULL
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/CZssj on line 12
Process exited with code 255.