Bug #73152 [Opn->Dup]: Hint of return type in PHP works unexpected way.

Edit report at https://bugs.php.net/bug.php?id=73152&edit=1 ID: 73152 Updated by: cmb@php.net Reported by: roman at litgroup dot ru Summary: Hint of return type in PHP works unexpected way. -Status: Open +Status: Duplicate Type: Bug Package: *General Issues Operating System: Linux PHP Version: 7.0.11 -Assigned To: +Assigned To: cmb Block user comment: N Private report: N New Comment: Duplicate of feature request #72442. Previous Comments: ------------------------------------------------------------------------ [2016-09-23 16:02:47] roman at litgroup dot ru Description: ------------ Hint of return type in PHP works unexpected way. It's not possible to change hint of return type to a more concrete subtype. Test script: --------------- interface Person {/* _ */} interface PersonFactory { public function createPerson(): Person; } class Customer implements Person {/* _ */} class CustomerFactory implements PersonFactory { public function createPerson(): Customer // PHP Fatal error: { // Declaration of CustomerFactory::createPerson(): Customer return new Customer(); // must be compatible with PersonFactory::createPerson(): Person } } ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=73152&edit=1