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15 Really Cool Things Most People Don't Know About PHP
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Mon Aug 20, 2007 7:18 pm Reply and quote this post
I saw the first article on Digg and was disappointed by that list. Hereare 15 interesting and unknown features of PHP that will make you moreproductive and take advantage of the new OO features in PHP5.

http://ioreader.com


Some amazing things at the linke above... like
Code:
autoload()

__autload iscalled transparently by PHP when a class that doesn't exist isinstantiated. Autoload will take in a class name and then go and tryand find the file that the class is in, include it, and let the programcontinue running its course.
Code:
 === and !==

These are extremely useful and most PHPers can't tell the differencebetween == and ===. Essentially, == looks for equality, and by that PHPwill generally try to coerce data into similar formats, eg: 1 == '1'(true), whereas === looks for identity: 1 === '1' (false). Theusefulness of these operators should be immediately recognized forcommon functions such as strpos(). Since zero in PHP is analogous toFALSE it means that without this operator there would be no way to tellfrom the result of strpos() if something is at the beginning of astring or if strpos() failed to find anything. Obviously this has manyapplications elsewhere where returning zero is not equivalent to FALSE.

Contributed by Editorial Team, Executive Management Team
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