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Subject: array_unique() and object comparison
From: matthieu@mnapoli.fr (Matthieu Napoli)

array_unique() is perfect for removing duplicates in a string array, but 
not so great for an array of objects.

SORT_REGULAR was added to compare items without casting them to string. 
However it uses the "==" comparison operator.

I see two improvements:

- on a short term, improve the documentation to make it explicit that 
the "==" operator will be used (the example with "(string) $elem1 === 
(string) $elem2" is misleading, "===" should be replaced with "==")

- on a long term, maybe add another option SORT_STRICT (like the $strict 
parameter for in_array): that sort would use the strict comparison 
operator "==="

Any thoughts about that?

Matthieu