3v4l.org

run code in 300+ PHP versions simultaneously
<?php interface A { function foo(); } interface B extends A { abstract function foo(); } class C implements B { function foo() { echo "aa"; } }
Output for 8.1.2 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Fatal error: Interface method B::foo() must not be abstract in /in/Q54X0 on line 8
Process exited with code 255.
Output for 8.1.0 - 8.1.1
Fatal error: Access type for interface method B::foo() must be public in /in/Q54X0 on line 8
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.6 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
Fatal error: Access type for interface method B::foo() must be omitted in /in/Q54X0 on line 8
Process exited with code 255.
Output for 7.0.0 - 7.0.5
Output for 5.0.0 - 5.0.5
Fatal error: Can't inherit abstract function A::foo() (previously declared abstract in B) in /in/Q54X0 on line 7
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/Q54X0 on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING in /in/Q54X0 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/Q54X0 on line 3
Process exited with code 255.

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