- Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
- test
- Output for 7.4.0 - 7.4.33
- Fatal error: Declaration of B::run(): string must be compatible with A::run(): mixed in /in/NcBW6 on line 13
Process exited with code 255.
<?php
class A
{
public function run(): mixed
{
return null;
}
}
class B extends A
{
public function run(): string
{
return 'test';
}
}
echo (new B())->run();