I was looking at the comparison operators page and noticed that these two operators were listed as "PHP4 only". Is that an error, or are they really not used in PHP5? I don't want to use them if they're going to break when I upgrade. And if they aren't included, then does something else replace their functionality?

Operators in question:
===
!==

Referenced URL:
http://www.php.net/manual/en/language.operators.comparison.php

Thanks!

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