3v4l.org

run code in 300+ PHP versions simultaneously
<?php abstract class ATest { public function foo(self $bar){} } class Test extends Atest { public function foo(self $bar){} }
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: Declaration of Test::foo(Test $bar) must be compatible with ATest::foo(ATest $bar) in /in/KMZll on line 10
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Warning: Declaration of Test::foo(Test $bar) should be compatible with ATest::foo(ATest $bar) in /in/KMZll on line 10
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Warning: Declaration of Test::foo(Test $bar) should be compatible with ATest::foo(ATest $bar) in /in/KMZll on line 11
Output for 5.4.1 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
Strict Standards: Declaration of Test::foo() should be compatible with ATest::foo(ATest $bar) in /in/KMZll on line 11
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
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_CLASS in /in/KMZll 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_CLASS in /in/KMZll on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/KMZll on line 3
Process exited with code 255.

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