How to Remove Duplicate Array Values in PHP

Written by Rahul, Updated on November 26, 2020

A Sample PHP script to remove all the duplicate values from an array. A running example to remove duplicate array values using PHP

Use PHP array_unique() function to remove all the duplicate values form an array. This function takes input of an array and return another array without duplicate values.

Here is an sample example:

<?php
$input = array("a" => "green", "green", "blue", "b" => "green", "red");
 
// Remove duplicate elements from an array
$result = array_unique($array);
print_r($result);
?>

<?php

$input = array("a" => "green", "green", "blue", "b" => "green", "red");

// Remove duplicate elements from an array

$result = array_unique($array);

print_r($result);

Expected output:

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

Rahul

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