3v4l.org

run code in 300+ PHP versions simultaneously
<?php interface FooInterface { public function method(); } class Foo implements FooInterface { public function method($arg = null) { } } class Bar extends Foo { public function method() { } }
Output for 8.0.0 - 8.0.15, 8.1.0 - 8.1.2
Fatal error: Declaration of Bar::method() must be compatible with Foo::method($arg = null) in /in/BeFp5 on line 14
Process exited with code 255.
Output for 7.4.0 - 7.4.27
Fatal error: Declaration of Bar::method() must be compatible with Foo::method($arg = NULL) in /in/BeFp5 on line 14
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Fatal error: Declaration of Bar::method() must be compatible with Foo::method($arg = NULL) in /in/BeFp5 on line 13
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 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, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/BeFp5 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/BeFp5 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/BeFp5 on line 3
Process exited with code 255.

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