url canonization

how is url canonization done in php for a website
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rgb192Asked:
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mrh14852Commented:
Depends on what you want to do...can you explain further?

This is a pretty good article on the subject as well  http://zenverse.net/url-canonicalization-using-php/
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Ray PaseurCommented:
Let's say you have a page that lists products in several different orders (sorted by price, manufacturer, etc.)  These pages all have the same content, just in different order.  To quote Google: A canonical page is the preferred version of a set of pages with highly similar content.  They have a good explanation with a video.

See http://support.google.com/webmasters/bin/answer.py?hl=en&answer=139394

HTH, ~Ray
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rgb192Author Commented:
thanks
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