Remove duplicate array on the base of key in multidimendional array PHP [duplicate]

Question

From following array key with ID 16 is comming twice. Hown can we remove this this duplicate ID. (REMOVE IF ID IS DUPLICATE OTHER FIELDS IGNORE)

 Array
   (
     [1] => Array
            (
                [ID] => 16
                [username] => dudda
                [message-time] => 2016-08-25 12:12:53
            )

   [2] => Array
            (
                [ID] => 16
                [username] => dudda
                [message-time] => 2016-08-25 12:01:54
            )

  [3] => Array
            (
                [ID] => 3
                [username] => himanshu
                [message-time] => 2016-08-15 12:53:38
            )

  [4] => Array
            (
                [ID] => 15
                [username] => dawinder
                [message-time] => 2016-08-10 11:40:33
            )
    )

what language is this? also note that the message times are different, are you sure this is a duplicate? — famagusta
– famagusta, Commented Aug 25, 2016 at 10:27

Himanshu kumar · Accepted Answer · 2016-08-25 11:30:58Z

3

I Got solution

I have develop this function for same :

function unique_multidim_array($array, $key) { 
   $temp_array = array(); 
   $i = 0; 
   $key_array = array(); 

foreach($array as $val) { 
    if (!in_array($val[$key], $key_array)) { 
        $key_array[$i] = $val[$key]; 
        $temp_array[$i] = $val; 
    } 
    $i++; 
} 
return $temp_array;

}

Now, call this function anywhere from your code,

something like this,

$details = unique_multidim_array($array_name,'key');

answered Aug 25, 2016 at 11:30

Himanshu kumar

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Comments

jmattheis · Accepted Answer · 2016-08-25 12:35:18Z

1

We used this to de-duplicate results from a variety of overlapping queries.

$input = array_map("unserialize", array_unique(array_map("serialize", $input)));

edited Aug 25, 2016 at 12:35

jmattheis

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answered Aug 25, 2016 at 10:30

Senthil

111 bronze badge

1 Comment

Himanshu kumar Over a year ago

here message-time is different, we have to remove on the base of ID only.

Jayendra Manek · Accepted Answer · 2016-08-25 13:37:45Z

1

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

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

For Example

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

Output will be:

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

edited Aug 25, 2016 at 13:37

answered Aug 25, 2016 at 11:03

Jayendra Manek

14814 bronze badges

3 Comments

Machavity Over a year ago

This is more of a comment. Quoting the manual is not considered a good answer. Please provide a code example next time. The code you provided is the documentation definition of the function you linked

Jayendra Manek Over a year ago

Bro I know but when i answered it i was not able to comment(my reputation was less than 50) so i cant comment it.

Machavity Over a year ago

Provide a code example and this is an acceptable answer

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