3v4l.org

run code in 300+ PHP versions simultaneously
<?php interface FormBuilderInterface { public function getForm($form_arg /* , mixed ...$args */); } class FormBuilder implements FormBuilderInterface { public function getForm($form_arg, mixed ...$args) {} } class FormBuilderExtended extends FormBuilder { public function getForm($form_arg) {} }
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
Fatal error: Declaration of FormBuilderExtended::getForm($form_arg) must be compatible with FormBuilder::getForm($form_arg, mixed ...$args) in /in/nblth on line 12
Process exited with code 255.
preferences:
92.38 ms | 407 KiB | 5 Q