Php

[development02]

How do you remove duplicate values from an array?

[Dan Grossman]

array_unique — Removes duplicate values from an array

http://us.php.net/array_unique

[UFTimmy]

As an aside, I've found using array_unique on very large arrays to take too long.

I find it's faster to store the value as the key of the array, too, which prevents duplicates and is faster in my testing.

instead of:

$arr[] = 5;

do

$arr[5] = 5;