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0votes
3answers
211views

Do i need 2 tables to book entity?

I am developing a website to store books info such (title, book_no, author, edition, container...). I have two types of insert insert series of books (Eg: harry porter series: chapter 1, 2,3...) ...
Sam's user avatar
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5votes
3answers
1kviews

Is saying "if ( $a != null && $a == 5)" the same as "if ($a == 5)"

First off, sorry if this is answered somewhere else. I did a brief search, but wasn't sure how to ask in search terms. I'm looking at some code and came across lot's of statements like this: if ( ($...
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