How to remove duplicate child from array PHP

Question

i need help about how to remove one or more array child from set of array that have exactly same keys and values with other child in PHP. Please take a look this array:

Array
(
    [0] => Array
        (
            [scn_fr_tm] => 10:35
            [scn_to_tm] => 12:55
            [mov_prnt_nm] => Thor Ragnarok
        )
    [1] => Array
        (
            [scn_fr_tm] => 10:40
            [scn_to_tm] => 12:39
            [mov_prnt_nm] => Geostorm
        )
    [2] => Array
        (
            [scn_fr_tm] => 11:30
            [scn_to_tm] => 13:22
            [mov_prnt_nm] => One Fine Day
        )
    [3] => Array
        (
            [scn_fr_tm] => 11:30
            [scn_to_tm] => 13:22
            [mov_prnt_nm] => One Fine Day
        )
    [4] => Array
        (
            [scn_fr_tm] => 11:30
            [scn_to_tm] => 13:00
            [mov_prnt_nm] => Total Chaos
        )
    [5] => Array
        (
            [scn_fr_tm] => 11:30
            [scn_to_tm] => 13:22
            [mov_prnt_nm] => One Fine Day
        )
)

as you can see from above array, i want to remove array[3] and array[5] from array because it has duplicate keys and values with array[2]. Above array created dynamically, so please don't ask me to use unset(array[3]) and unset(array[5]).

here is my array creation code, the array created from other array:

foreach ($datas as $data)
{
    if (array_key_exists('attr', $data))
    {
        $arr[] = array(
            'scn_fr_tm'     => substr_replace($data['attr'][0]['scn_fr_tm'],':',2,0),
            'scn_to_tm'     => substr_replace($data['attr'][0]['scn_to_tm'],':',2,0),
            'mov_prnt_nm'   => substr($data['mov_prnt_nm'], 0, 20)
        );
    }
}

Thank you for your help

could be done in the array creation code, but you dont show that so .. — user6763587
– user6763587, Commented Nov 2, 2017 at 20:42
i would create an array to just hold titles as you build the new array, then you can use a simple in_array() check before adding to your main array — user6763587
– user6763587, Commented Nov 2, 2017 at 20:49

Don't Panic · Accepted Answer · 2017-11-02 20:56:17Z

1

I thought of a couple of different options:

$unique = array_map('unserialize', array_unique(array_map('serialize', $array)));

or

while ($item = array_pop($array)) {
    if (!in_array($item, $array)) {
        $unique[] = $item;
    }
}

answered Nov 2, 2017 at 20:56

Don't Panic

41.9k11 gold badges70 silver badges87 bronze badges

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

1 Comment

Don't Panic Over a year ago

You're welcome. You know, as far as the in_array one, you can do as @nogad suggested in the comments and just check for that before adding each item into the array as you build it. That should be a bit more efficient that trying to make it unique afterward.

Collectives™ on Stack Overflow

How to remove duplicate child from array PHP

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related