3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { function bar() { echo isset($this) ? 'Instance' : 'Class', "\n"; } } // OK: Foo->bar(); class Baz { function test() { Foo::bar(); } } // Take care: $baz = new Baz; $baz->test();
Output for 8.0.0 - 8.0.3, 8.1.23 - 8.1.28, 8.2.10 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Undefined constant "Foo" in /in/5gefL:11 Stack trace: #0 {main} thrown in /in/5gefL on line 11
Process exited with code 255.
Output for 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, 7.2.0 - 7.2.34, 7.3.0 - 7.3.27, 7.4.0 - 7.4.16
Parse error: syntax error, unexpected '->' (T_OBJECT_OPERATOR) in /in/5gefL on line 11
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_OBJECT_OPERATOR in /in/5gefL on line 11
Process exited with code 255.

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