remove duplicates from multidimensional array

Question

print_r($jobtypes) give me an array. Array contains duplicate elements. I want to remove the duplicates. Here is an array

                Array
(
    [0] => stdClass Object
        (
            [term_id] => 40
            [name] => Babysitting
            [slug] => babysitting
            [term_group] => 0
            [term_taxonomy_id] => 40
            [taxonomy] => job_listing_type
            [description] => 
            [parent] => 0
            [count] => 3
        )

    [1] => stdClass Object
        (
            [term_id] => 43
            [name] => Lawn Mowing
            [slug] => lawn-mowing
            [term_group] => 0
            [term_taxonomy_id] => 43
            [taxonomy] => job_listing_type
            [description] => 
            [parent] => 0
            [count] => 3
        )

    [2] => stdClass Object
        (
            [term_id] => 39
            [name] => Leaf Raking
            [slug] => leaf-raking
            [term_group] => 0
            [term_taxonomy_id] => 39
            [taxonomy] => job_listing_type
            [description] => 
            [parent] => 0
            [count] => 2
        )

    [3] => stdClass Object
        (
            [term_id] => 41
            [name] => Pet Sitting
            [slug] => pet-sitting
            [term_group] => 0
            [term_taxonomy_id] => 41
            [taxonomy] => job_listing_type
            [description] => 
            [parent] => 0
            [count] => 3
        )

    [4] => stdClass Object
        (
            [term_id] => 42
            [name] => Plant Watering
            [slug] => plant-watering
            [term_group] => 0
            [term_taxonomy_id] => 42
            [taxonomy] => job_listing_type
            [description] => 
            [parent] => 0
            [count] => 2
        )

    [5] => stdClass Object
        (
            [term_id] => 44
            [name] => Snow Shoveling
            [slug] => snow-shoveling
            [term_group] => 0
            [term_taxonomy_id] => 44
            [taxonomy] => job_listing_type
            [description] => 
            [parent] => 0
            [count] => 5
        )

    [6] => stdClass Object
        (
            [term_id] => 40
            [name] => Babysitting
            [slug] => babysitting
            [term_group] => 0
            [term_taxonomy_id] => 40
            [taxonomy] => job_listing_type
            [description] => 
            [parent] => 0
            [count] => 3
            [filter] => raw
        )

)

How to remove the duplicates. I this case

[name] => Babysitting
                [slug] => babysitting
                [term_group] => 0
                [term_taxonomy_id] => 40
                [taxonomy] => job_listing_type
                [description] => 
                [parent] => 0
                [count] => 3
                [filter] => raw

is twice. I used

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

but not working. thanks

Where does the data come from? If it comes from a database then you should write your query so that duplicates are not included in the result. Also, did you use the search before asking? There are plenty of questions that basically ask the same thing. — Sverri M. Olsen
– Sverri M. Olsen, Commented May 21, 2014 at 1:41

scrowler · Accepted Answer · 2014-05-21 01:44:51Z

2

You can do a manual loop structure looking for the non-existence of each term_id in a unique array, and if it's not there then add it.

In this example I'm using the term_id as the array key for an easy lookup during the loop.

$unique = array();
foreach($your_array as $key => $value) {
    // look for non-existance of term_id in $unique array (as key)
    if(!array_key_exists($value->term_id, $unique)) {
        // add to unique array
        $unique[$value->term_id] = $value;
    }
}

After you've created an array containing unique objects, you can reset those array keys and assign the unique array back to the original array like this:

// reset array keys by assigning values to original array
$your_array = array_values($unique);

answered May 21, 2014 at 1:44

scrowler

24.4k10 gold badges67 silver badges99 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

remove duplicates from multidimensional array

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related