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<?php function myfuncByVal(stdClass $o) { $o->myproperty = "testByVal"; $o = null; } function myfuncByRef(stdClass &$o) { $o->myproperty = "testByRef"; $o = null; } $willPassByVal = new stdClass(); $willPassByRef = new stdClass(); myFuncByVal($willPassByVal); myFuncBYRef($willPassByRef); var_dump(compact('willPassByVal', 'willPassByRef'));
Output for 8.1.32 - 8.1.34, 8.2.25 - 8.2.32, 8.3.5 - 8.3.33, 8.4.1 - 8.4.24, 8.5.0 - 8.5.9
array(2) { ["willPassByVal"]=> object(stdClass)#1 (1) { ["myproperty"]=> string(9) "testByVal" } ["willPassByRef"]=> NULL }

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