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georgefox
on March 24, 2012
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Poll: What's Your Most Disliked Programming Langua...
You're correct. Type hinting was introduced with PHP 5, which makes it about eight years old.
http://php.net/manual/en/language.oop5.typehinting.php
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Search:
http://php.net/manual/en/language.oop5.typehinting.php