PHP array_unique() Function

PHP array_unique() Function


Hello folks! welcome back to a new section of our tutorial on PHP. In this tutorial guide, we are going to be studying about the PHP array_unique() Function.

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

Syntax

Following below is the syntax to use this function -

array_unique ( $array );


Parameter Details

Sr.NoParameter & Description
1

array1(Required)

It specifies an array.


Return Value

It returns a filtered array.

Example

Try out the below example -

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

Output

When the above code is executed, it will produce the following result -

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


Alright guys! This is where we are going to be rounding up for this tutorial post. In our next tutorial, we are going to be discussing about the PHP array_unshift() Function.

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