Doc #65930 [Opn->Dup]: new does not evaluate arguments if class has no constructor

Edit report at https://bugs.php.net/bug.php?id=65930&edit=1 ID: 65930 Updated by: bwoebi@php.net Reported by: php at mlemoine dot name Summary: new does not evaluate arguments if class has no constructor -Status: Open +Status: Duplicate Type: Documentation Problem Package: Documentation problem Operating System: Irrelevant PHP Version: 5.5.5 Block user comment: N Private report: N New Comment: Duplicate of https://bugs.php.net/bug.php?id=54170 Previous Comments: ------------------------------------------------------------------------ [2013-10-22 11:55:39] daverandom@php.net Note that the test script is incorrect, it should be ++$this->i. When this change is effected, the reported problem can be seen. I personally would consider this a bug with PHP and not with the documentation, as the arguments should, in my view, always be evaluated regardless of whether the class has a constructor. ------------------------------------------------------------------------ [2013-10-18 16:19:57] php at mlemoine dot name Description: ------------ Either new \MyClass($foo->getBar()) is used or new $class($foo->getBar()) is used. If the instanciated class has no constructor explicitly defined or inherited, $foo->getBar() will never be invoked. This prevent any side-effect to be run and can produce very unexpected behaviour. This should either be fixed so the arguments are ALWAYS evaluated, or documented as such. CF example belows Test script: --------------- <?php class foo { public $i = 0; function createANewBar() { ++$i; return null; } } class no_construct { } class a_construct { public function __construct() { } } $myFoo = new foo; echo $myFoo->i.PHP_EOL; $class = 'no_construct'; $object = new $class($myFoo->createANewBar()); echo $myFoo->i.PHP_EOL; $object = new no_construct($myFoo->createANewBar()); echo $myFoo->i.PHP_EOL; $class = 'a_construct'; $object = new $class($myFoo->createANewBar()); echo $myFoo->i.PHP_EOL; $object = new a_construct($myFoo->createANewBar()); echo $myFoo->i.PHP_EOL; Expected result: ---------------- 0 1 2 3 4 Actual result: -------------- 0 0 0 1 2 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=65930&edit=1