removing duplicates from an array in php

Question

I want to remove duplicate elements from an array in php. Following is the structure of the array

Array
(
    [0] => Array
        (
            [0] => xllga@hotmail.com
            [1] => bounce@abc.com
            [2] => 20120416135504.21734.qmail@abc.com
            [3] => xllga@hotmail.com
            [4] => info@abc.com
            [5] => info@abc.com
            [6] => xllga@hotmail.com
            [7] => xllga@hotmail.com
        )

)

How to go about it ?

is this data being pulled back from a table using SQL? If so couldn't the problem be addressed there instead? (a la GROUP BY) to only recieve unique responses? — Aleski, Apr 25 '12 at 12:25

Dr.Kameleon · Answer 1 · 2012-04-25T12:28:21.323

7

Try array_unique.

Code :

<?php

$arr = array_unique($arr);

?>

array array_unique ( array $array [, int $sort_flags = SORT_STRING ] )

Takes an input array and returns a new array without duplicate values.

edited Apr 25 '12 at 12:28

answered Apr 25 '12 at 12:26

Dr.Kameleon

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And for reference, [`array_unique` docs](http://php.net/manual/en/function.array-unique.php) – Brad Christie Apr 25 '12 at 12:26

score 3 · Answer 2 · answered Apr 25 '12 at 12:26

3

Try array_unique():

$newArray = array_unique($oldArray);

From the docs:

[array_unique()] Takes an input array and returns a new array without duplicate values.

answered Apr 25 '12 at 12:26

Bojangles

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score 2 · Accepted Answer · answered Apr 25 '12 at 12:27

2

http://php.net/manual/en/function.array-unique.php

$new_unique_array = array_unique($your_array[0]);

Hope that helps, Stefan

answered Apr 25 '12 at 12:27

ExternalUse

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score 0 · Answer 4 · answered Apr 25 '12 at 12:36

0

No array_unique() solution. not so smart:)

array_keys(array_flip($array));

If use your array, $array = $yourArray[0];

answered Apr 25 '12 at 12:36

tosin

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removing duplicates from an array in php

4 Answers4