Description:
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The examples doesn't use the LC_* constants, so using the example under PHP 5.3 will throw the following exception:

Deprecated: setlocale(): Passing locale category name as string is deprecated. Use the LC_* -constants instead


Also, the manual could (should ?) give a link to a list of the constant.

(Out of topic, but also, I can't figure out how to store local in a database. Many sites use multiple locale, and MySQL can't store php constant. Using the numeric value or the constant could be a valid solution if a function to convert locale String <-> locale Integer would be available)