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<?php interface IA { public function compare(self $x); } interface IAChild extends IA {} class A implements IA { public function compare(IA $x) {} } class AA implements IAChild { public function compare(IAChild $x){} } $a = new A; $aa = new AA; $a->compare($a); $a->compare($aa);
Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Fatal error: Declaration of AA::compare(IAChild $x) must be compatible with IA::compare(IA $x) in /in/ODkTf on line 15
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Fatal error: Declaration of AA::compare(IAChild $x) must be compatible with IA::compare(IA $x) in /in/ODkTf on line 14
Process exited with code 255.
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Fatal error: Declaration of AA::compare() must be compatible with IA::compare(IA $x) in /in/ODkTf on line 14
Process exited with code 255.
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