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<?php abstract class ParentClass { abstract public function parentMethod(int $param): bool; } trait MyTrait { abstract public function traitMethod($param): bool; } class ChildClass extends ParentClass { use MyTrait; // implementation of the abstract methods public function parentMethod(int $param): bool { // change parent method parameter type // implementation } public function traitMethod(int $param): bool { // change trait method parameter type // implementation } }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.4, 8.3.6 - 8.3.7
Fatal error: Declaration of ChildClass::traitMethod(int $param): bool must be compatible with MyTrait::traitMethod($param): bool in /in/7sid7 on line 22
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Declaration of ChildClass::traitMethod(int $param): bool must be compatible with MyTrait::traitMethod($param): bool in /in/7sid7 on line 22
Process exited with code 255.
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
preferences:
117.89 ms | 402 KiB | 193 Q