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<?php interface TestInterface { public function testFunction($val); } abstract class TestClass implements TestInterface {} class TestSubClass extends TestClass { function testFunction($val) { return true; } } $tsc = new TestSubClass(); $tsc->testFunction();
Output for 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, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Fatal error: Uncaught ArgumentCountError: Too few arguments to function TestSubClass::testFunction(), 0 passed in /in/F58SP on line 17 and exactly 1 expected in /in/F58SP:11 Stack trace: #0 /in/F58SP(17): TestSubClass->testFunction() #1 {main} thrown in /in/F58SP on line 11
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, 7.0.0 - 7.0.33
Warning: Missing argument 1 for TestSubClass::testFunction(), called in /in/F58SP on line 17 and defined in /in/F58SP on line 11
Output for 5.0.0 - 5.0.5
Warning: Missing argument 1 for TestSubClass::testFunction() in /in/F58SP on line 11
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/F58SP 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/F58SP on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/F58SP on line 3
Process exited with code 255.

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