array array_unique
(array array)
array_unique() takes input array and returns a new array without duplicate values.
Note that keys are preserved. array_unique() will keep the first key encountered for every value, and ignore all following keys.
Note: Two elements are considered equal if and only if (string) $elem1 === (string) $elem2. In words: when the string representation is the same.
The first element will be used.
Warning |
This was broken in PHP 4.0.4! |
Example 1. array_unique() example
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Example 2. array_unique() and types
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