How to Remove Duplicates in an Array in PHP - Step by Step Examples

◀ Previous Next ▶

How to Remove Duplicates in an Array in PHP ?

Answer

To remove duplicates from an array in PHP, you can use the `array_unique()` function.

✐ Examples

1 Remove Duplicates from Integer Array

In this example,

We create an array named `$numbers` with duplicate integers.
We use the `array_unique()` function to remove duplicates from the array.
Finally, we get an array without duplicates using the `array_unique()` function.

PHP Program

<?php 
$numbers = [1, 2, 2, 3, 4, 4, 5];
$uniqueNumbers = array_unique($numbers);
print_r('Array without duplicates: ' . json_encode($uniqueNumbers));
?>

Output

Array without duplicates: [1, 2, 3, 4, 5]

2 Remove Duplicates from String Array

In this example,

We create an array named `$colors` with duplicate strings.
We use the `array_unique()` function to remove duplicates from the array.
Finally, we get an array without duplicates using the `array_unique()` function.

PHP Program

<?php 
$colors = ['red', 'green', 'blue', 'green', 'yellow', 'blue'];
$uniqueColors = array_unique($colors);
print_r('Array without duplicates: ' . json_encode($uniqueColors));
?>

Output

Array without duplicates: ['red', 'green', 'blue', 'yellow']

Summary

In this tutorial, we learned How to Remove Duplicates in an Array in PHP language with well detailed examples.

◀ Previous Next ▶

PHP Tutorials

PHP How-Tos

How to Remove Duplicates in an Array in PHP - Step by Step Examples

How to Remove Duplicates in an Array in PHP ?

Answer

✐ Examples

1 Remove Duplicates from Integer Array

PHP Program

Output

2 Remove Duplicates from String Array

PHP Program

Output

Summary

More PHP Arrays Tutorials