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<?php class A extends DOMDocument { const TEST = false; public function loadXml($source, $options = NULL) { var_dump(static::TEST); } } class B extends A { const TEST = true; } $b = new B; $b->loadXml('test');
Output for 8.3.0 - 8.3.7
Deprecated: Return type of A::loadXml($source, $options = null) should either be compatible with DOMDocument::loadXML(string $source, int $options = 0): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/ks6EK on line 6 bool(true)
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 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
bool(true)

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