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<?php function modifyObj($obj) { $obj->a = 'Hello world'; $obj->b = 'Something new'; } $obj = new StdClass(); $obj->a = 'Hello'; modifyObj($obj); var_dump($obj);
Output for 5.0.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
object(stdClass)#1 (2) { ["a"]=> string(11) "Hello world" ["b"]=> string(13) "Something new" }
Output for 4.3.0 - 4.4.9
object(stdClass)(1) { ["a"]=> string(5) "Hello" }