Remove duplicate values from an array in php - array_unique

You can use array_unique() function get unique values out of a long array.
function will return an array with unique values and will preserve the keys.

<?php

$my_array = array(1, 2, 3, 3, 4, 4, 1, 5, 6, 6, 7);

$my_unique_array = array_unique($my_array);

echo '<pre>';
print_r($my_unique_array);
echo '</pre>';

/*
OUTPUT:

Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [4] => 4
    [7] => 5
    [8] => 6
    [10] => 7
)


*/
?>