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<?php interface Common { function createCommon(); } interface Specific1 extends Common { function createSpecific1(); } interface Specific2 extends Common { function createSpecific2(); } class A implements Common, Specific1 { public function createCommon() { } public function createSpecific1() { } } print_r(class_implements(new A()));
Output for 5.5.0 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Array ( [Common] => Common [Specific1] => Specific1 )

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173.59 ms | 404 KiB | 224 Q