3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { public function a() { return self::b(); } private function b() { return true; } } class B implements A { public function c() { return parent::a(); } } $b = new B(); var_dump($b->c());
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Cannot use "parent" when current class scope has no parent in /in/mK98Q on line 14
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; A has a deprecated constructor in /in/mK98Q on line 2 Deprecated: Cannot use "parent" when current class scope has no parent in /in/mK98Q on line 14 Fatal error: B cannot implement A - it is not an interface in /in/mK98Q on line 12
Process exited with code 255.
Output for 5.4.2 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.3.32 - 7.3.33
Fatal error: B cannot implement A - it is not an interface in /in/mK98Q on line 12
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31
Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; A has a deprecated constructor in /in/mK98Q on line 2 Fatal error: B cannot implement A - it is not an interface in /in/mK98Q on line 12
Process exited with code 255.
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234.76 ms | 402 KiB | 272 Q