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<?php class Foo { private $_foo = 'foo'; public function isMatch() { return $this->_foo == self::_foo; } } class Bar extends Foo { private $_foo = 'bar'; } $a = new Bar(); var_dump($a->isMatch());
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: Undefined constant Foo::_foo in /in/dgTL4:7 Stack trace: #0 /in/dgTL4(16): Foo->isMatch() #1 {main} thrown in /in/dgTL4 on line 7
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Uncaught Error: Undefined class constant '_foo' in /in/dgTL4:7 Stack trace: #0 /in/dgTL4(16): Foo->isMatch() #1 {main} thrown in /in/dgTL4 on line 7
Process exited with code 255.
Output for 5.4.2 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28
Fatal error: Undefined class constant '_foo' in /in/dgTL4 on line 7
Process exited with code 255.
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