Bug #77507 [Com]: No fatal error when implementing interface method with parameter type declared

Edit report at https://bugs.php.net/bug.php?id=77507&edit=1 ID: 77507 Comment by: spam2 at rhsoft dot net Reported by: a dot owrew at gmail dot com Summary: No fatal error when implementing interface method with parameter type declared Status: Closed Type: Bug Package: Scripting Engine problem Operating System: Linux PHP Version: 7.2.14 Assigned To: cmb Block user comment: N Private report: N New Comment: if 7.0/7.1 would have worked as sane as 7.2 in that context it would have saved a lot of hours and headache when we added type-hints to our complete codebase where you start to extend shared libraries and every custom consumer was broken in one or the other direction and there are still too much cases ending in fatal errors Previous Comments: ------------------------------------------------------------------------ [2019-01-23 11:22:07] cmb@php.net This is a deliberate change[1], mostly to accommodate libraries which want to add paramter type hints without breaking existing clients. It is also documented in the migration guide[2]. [1] <https://wiki.php.net/rfc/parameter-no-type-variance> [2] <http://de2.php.net/manual/en/migration72.new-features.php#migration72.new-features.param-type-widening> ------------------------------------------------------------------------ [2019-01-23 10:37:42] a dot owrew at gmail dot com Description: ------------ As it states in the summary, up until PHP 7.1.26, implementing an interface method without providing the full signature would cause a fatal error. Starting PHP 7.2.0 it appears to be more lax. In the example, the missing string parameter type is causing a fatal error prior to PHP 7.2.0. Test script: --------------- <?php interface SomeInterface { public function setSome(string $some); } class SomeClass implements SomeInterface { public function setSome($some){} } Expected result: ---------------- Fatal error: Declaration of SomeClass::setSome($some) must be compatible with SomeInterface::setSome(string $some) ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=77507&edit=1