Array Combine in PHP - php

Question

I am trying to combine keys and values in arrays. I have an product_id with different price.
Let say
Product id and price
id 101 and price is 100
id 105 and price is 200
id 101 and price is 300
list of product ids in array with $product_ids[] and list of price also $price_amount[]
So I preferred to combine the two arrays using array_combine
I made array_combine($product_ids,$price_amount);
Now it appears look like this way
array(2) { [101]=> float(100) [105]=> float(300) }
Is there is a way to add the key elements to the id as something like
array(2) {
[101] => float(400) (100+300)
[105] => float(300)
}
Here is the idea i tried
$products = array();
$order_totalss = array();
foreach (get_posts('post_type=shop_order&numberposts=-1&post_status=publish') as $order) {
$order = new WC_Order($order->ID);
if (wc_customer_bought_product($order->billing_email, $order->user_id, $product_id)) {
$productcounts[] = $product_id;
$order_totalss[] = $order->get_total();
}
}
$arraymergeme = array_combine($productcounts, $order_totalss);

Answer 1

You will have to do this manually I'm afraid:
$total = array();
foreach ($product_ids as $key => $value) {
// each value of product_ids becomes the key
if (isset($total[$value])) {
// we have seen this key before
$total[$value] += $price_amount[$key];
} else {
// new key
$total[$value] = $price_amount[$key];
}
}

Answer 2

Simple code so you can see what's happening clearly:
$ids = array(101, 105, 101);
$prices = array(100, 200, 300);
$totals = array();
foreach ($ids as $key => $id)
{
// Make sure index is defined
if ( ! isset($totals[$id]))
{
// Make sure we have a value
$totals[$id] = 0;
}
// Assuming index $key matches... add to the total
$totals[$id] += $prices[$key];
}

Answer 3

PHP arrays are associative so you can write something like: price['101'] = 100 thereby using the product id as the array index.

Answer 4

Thinking you are looking for something like this. I haven't done php in awhile, so the syntax may need tweaking, but I think the logic is correct.
$cart = array(
"101" => 100,
"105" => 200,
"101" => 300
);
$product_id_arr = array();
foreach ($cart as $product_id => $price) {
if(array_key_exists($product_id, $product_id_arr)){
$product_id_arr[$product_id] = $product_id_arr[$product_id] + $price;
}else{
$product_id_arr[$product_id] = $price;
}
}

Answer 5

array_combine will not do the trick for you. You will have to iterate through the array and total them as you go. Here's an example:
<?php
$product_ids = array('101', '105', '101');
$price_amount = array(100, 200, 300);
$combined = array();
$productCount = count($product_ids);
for($i = 0; $i < $productCount; $i++) {
// if this product_id is not in the $combined array, add its price
// as associative array ('101'=>100)
// but if it is found in $combined, add to its current price
if (!array_key_exists($product_ids[$i], $combined)) {
$combined[$product_ids[$i]] = $price_amount[$i];
} else {
$combined[$product_ids[$i]] += $price_amount[$i];
}
}
print_r($combined);
?>
Results:
Array
(
[101] => 400
[105] => 200
)

Answer 6

Try this
$final_arr = array();
for($i=0;$i<count($product_ids);$i++) {
if(!isset($final_arr[$product_ids[$i]])) {
$final_arr[$product_ids[$i]] = 0;
}
$final_arr[$product_ids[$i]] += $price_amount[$i];
}

Answer 7

Yes you can add key elements to id, basically an array can be created by using the array() language construct. It takes any number of comma-separated key => value pairs as arguments.
array(
key => value,
key2 => value2,
key3 => value3,
...
)
the one you are looking for is associative array. you can definitely specify the key you want and store the value you want at that key.
here is a link that would be helpful