PHP - Function array_unique()


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Syntax

array_unique ( $array );

Definition and Usage

The array_unique() function removes duplicate values from an array. If two or more array values are the same, the first appearance will be kept and the other will be removed.

Parameters

ParameterDescription
array1Required. Specifies an array.

Example

Try out following example:

<?php
$input = array("a" => "green", "red", "b" => "green", "blue", "red");
$result = array_unique($input);
print_r($result);
?> 

This will produce following result:

Array
(
    [a] => green
    [0] => red
    [1] => blue
)

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