Online PHP editor | output for Hio9E

<?php // example 1: PHP Predefined Interface $refClass = new ReflectionClass('Throwable'); $parentRef = $refClass->getParentClass(); echo $parentRef ? $parentRef->getName() : 'false'; echo "\n"; var_dump($refClass->getInterfaceNames()); // example 2 : userland interface interface Foo extends Bar { } interface Bar { } $refClass = new ReflectionClass('Foo'); $parentRef = $refClass->getParentClass(); echo $parentRef ? $parentRef->getName() : 'false'; echo "\n"; var_dump($refClass->getInterfaceNames());