Extending a Child6:12 with Alena Holligan
In this video we will extend the child class from ListingPremium. This new grandchild will inherit all the attributes and abilities of ListingPremium AND ListingBasic.
$object = new ListingFeatured(); //parent echo is_a($object, 'ListingPremium'); //returns true //grandparent echo is_a($object, 'ListingBasic'); //returns true //sibling of parent echo is_a($object, 'ListingInactive'); //returns false
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