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<?php class A { function hello(){ echo "Hello World\n"; } } $x = 'hello'; $y[0] = 'hello'; A::$x(); A::$y[0]();
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Non-static method A::hello() cannot be called statically in /in/bQ6pe:10 Stack trace: #0 {main} thrown in /in/bQ6pe on line 10
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Deprecated: Non-static method A::hello() should not be called statically in /in/bQ6pe on line 10 Hello World Fatal error: Uncaught Error: Access to undeclared static property: A::$y in /in/bQ6pe:11 Stack trace: #0 {main} thrown in /in/bQ6pe on line 11
Process exited with code 255.
Output for 7.3.32 - 7.3.33
Hello World Fatal error: Uncaught Error: Access to undeclared static property: A::$y in /in/bQ6pe:11 Stack trace: #0 {main} thrown in /in/bQ6pe on line 11
Process exited with code 255.
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Strict Standards: Non-static method A::hello() should not be called statically in /in/bQ6pe on line 10 Hello World Strict Standards: Non-static method A::hello() should not be called statically in /in/bQ6pe on line 11 Hello World

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