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It is pretty simple to delete duplicate values from PHP Array. But sometimes we confuse for how can we remove. But PHP provide pre-define function array_unique that can help to remove duplicate values from Array.

array_unique() through we can get only unique value from array. So, you can see bellow example i have 34 value two times but when i use array_unique() then it will return only unique value as bellow output:

Example:

<?php
  
    $myArray = [11, 34, 56, 78, 34, 11, 23];
    $myArrayNew = array_unique($myArray);
  
    print_r($myArrayNew);
  
?>

Output:

Array
(
    [0] => 11
    [1] => 34
    [2] => 56
    [3] => 78
    [6] => 23
)

I hope it can help you...