PHP function for returning array with unique indexes

Question

I have a simple problem. Lets say I have an array

Array

0   
product_id  233
slug    "zotac-geforce-gtx-1070-amp-extreme-edition-8gb-zt-p10700b-10p"

1   
product_id  227
slug    "zotac-geforce-gtx-1060-mini-6gb-gddr5-zt-p10600a-10l"

2   
product_id  233
slug    "zotac-geforce-gtx-1070-amp-extreme-edition-8gb-zt-p10700b-10p"

Now if you see there are two products having same product_id! I don't want that I am trying to get this array filtered from duplicate products

This is what I tried but it doesn't work

$temp_products = array();
    foreach($products as $product)
    {
        if(count($temp_products) > 0)
        {
            foreach($temp_products as $temp_product)
            {
                if($temp_product['product_id'] != $product['product_id'])
                {
                    $temp_products[] = $product;
                }
            }
        }
        else
        {
            $temp_products[] = $product;
        }
    }

It returns the same array as the original one. and $products is the main array having the data.

array_filter removes duplicates if data is the same

clearshot66
– clearshot66

2017-05-11 12:51:31 +00:00
Commented May 11, 2017 at 12:51 — clearshot66
– clearshot66, Commented May 11, 2017 at 12:51
You could also check array_unique and its comments.

Seth
– Seth

2017-05-11 12:52:26 +00:00
Commented May 11, 2017 at 12:52 — Seth
– Seth, Commented May 11, 2017 at 12:52
$products array came from elasticsearch result

Alexu
– Alexu

2017-05-11 13:02:37 +00:00
Commented May 11, 2017 at 13:02 — Alexu
– Alexu, Commented May 11, 2017 at 13:02

Ali Rasheed · Accepted Answer · 2017-05-11 13:01:46Z

1

Try this! But I would definitely suggest using array_filter or array_unique will post an example later. Try this.

$temp_products = array();
    $count = 0;
    foreach($products as $product)
    {

        if(count($temp_products) > 0)
        {
            //foreach($temp_products as $temp_product)
            //{
                if($temp_products[$count]['product_id'] != $product['product_id'])
                {
                    $temp_products[] = $product;
                }
            //}
        }
        else
        {
            $temp_products[] = $product;
        }

    }

Using array_unqiue

    foreach($products as $product)
    {
       $temp_products[] = $product;
    }

    dd(array_unique($temp_products));

edited May 11, 2017 at 13:01

answered May 11, 2017 at 12:54

Ali Rasheed

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Comments

RST · Accepted Answer · 2017-05-11 13:00:22Z

1

Another way would be to use a helper array to keep track of already present ids.

$temp_products = array();
$already_present = array();
    foreach($products as $product)
    {
      $id = $product['product_id'];
      if ( isset($already_present[ $id ] ) ) continue;
      $temp_products[] = $product;
      $already_present[ $id ] = '';
    }

$products = $temp_products;

answered May 11, 2017 at 13:00

RST

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