PHP array unique values despite of upper/lowercase

Question

I am want to remove duplicated value from array so i am doing this

$input = array("APPL", "berry", "apple", "berry");
$result = array_unique($input);
print_r($result);

So it will output:

APPLE,apple,berry

I want to get result like output apple only once despite of lowercase and uppercase, how can i do this? is there any function in PHP like "array_unique" which i have to use instead, in situation like this? (without making all characters upper or lowercase)

[case-insensitive array_unique][1] [1]: stackoverflow.com/questions/2276349/… — Sofiene Djebali
– Sofiene Djebali, Commented Aug 14, 2015 at 9:58
First of all, I assume you meant to write $input = array("APPLE", "berry", "apple", "berry");. Secondly, if you are looking for a result of ['APPLE', 'apple', 'berry'] you are doing a case-sensitive filter, not case-insensitive. In which case, just use array_unique() — Darragh Enright
– Darragh Enright, Commented Aug 14, 2015 at 10:03
@Darragh how do i make it case-insensitive? i don't want to change all of them in upper or lowercase. — Giorgi Khmaladze
– Giorgi Khmaladze, Commented Aug 14, 2015 at 10:06

Deenadhayalan Manoharan · Accepted Answer · 2015-08-14 10:04:50Z

2

Try this..

<?php
$input = array("APPLE", "berry", "apple", "berry");

$data = array_intersect_key($input, array_unique(array_map('strtolower', $input)));

print_r($data);
?>

https://eval.in/416659

answered Aug 14, 2015 at 10:04

Deenadhayalan Manoharan

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Thomas · Accepted Answer · 2015-08-14 10:24:18Z

0

An array is case sensitive. No function to ignore it while printing, but you may change the case before. Try this :

$input = array("APPLE", "berry", "apple", "berry");
$lower_input = array_map('strtolower', $input);
$result2 = array_unique($lower_input);
print_r($result2);

answered Aug 14, 2015 at 10:24

Thomas

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Comments

k0pernikus · Accepted Answer · 2015-08-14 10:58:41Z

-1

Use:

function array_iunique($array) {
        return array_intersect_key(
            $array,
            array_unique(array_map("StrToLower",$array))
        );
    }

edited Aug 14, 2015 at 10:58

k0pernikus

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answered Aug 14, 2015 at 10:06

Vijay Kumar

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