What is the use of assigning child class object to parent reference variable in PHP?

Started by Hadley, November 17, 2016, 07:04:54 PM

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Isa

November 17, 2016, 07:04:54 PM
Hi, I'd like to ask you a big, big problem, what is the use of assigning child class object to parent reference variable in php? Thank you very much for answering me Help.
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