Array Merge with array value as key - php

Question

I am trying to convert an multi-dimentional array of product data where the PayPal email is set as one of the array values(can be same for some). I need help on merging those as arrays where the paypal_email key is same. Here is the print_r of the array that I have.
Array
(
[0] => Array
(
[name] => Test Product
[product_id] => 307
[variation_id] => 0
[subtotal] => 30
[total] => 30
[quantity] => 2
[subtotal_tax] => 2.66
[total_tax] => 2.66
[paypal_email] => thisismytestpaypal#sandbox.com
[vendor_id] => 2
[shipping] => Array
(
[shipping_total] => 25.00
[shipping_tax] => 2.22
)
)
[1] => Array
(
[name] => Album
[product_id] => 354
[variation_id] => 0
[subtotal] => 15
[total] => 15
[quantity] => 1
[subtotal_tax] => 1.33
[total_tax] => 1.33
[paypal_email] => thisismytestpaypal#sandbox.com
[vendor_id] => 11
[shipping] => Array
(
[shipping_total] => 25.00
[shipping_tax] => 2.22
)
)
[2] => Array
(
[name] => Beanie with Logo
[product_id] => 357
[variation_id] => 0
[subtotal] => 18
[total] => 18
[quantity] => 1
[subtotal_tax] => 1.60
[total_tax] => 1.60
[paypal_email] => ab2#sandbox.com
[vendor_id] => 10
[shipping] => Array
(
[shipping_total] => 25.00
[shipping_tax] => 2.22
)
)
[3] => Array
(
[name] => Long Sleeve Tee
[product_id] => 352
[variation_id] => 0
[subtotal] => 75
[total] => 75
[quantity] => 3
[subtotal_tax] => 6.66
[total_tax] => 6.66
[paypal_email] => ab2#sandbox.com
[vendor_id] => 2
[shipping] => Array
(
[shipping_total] => 25.00
[shipping_tax] => 2.22
)
)
[4] => Array
(
[name] => Polo
[product_id] => 353
[variation_id] => 0
[subtotal] => 80
[total] => 80
[quantity] => 4
[subtotal_tax] => 7.10
[total_tax] => 7.10
[paypal_email] => tv3#sandbox.com
[vendor_id] => 8
[shipping] => Array
(
[shipping_total] => 25.00
[shipping_tax] => 2.22
)
)
[5] => Array
(
[name] => Product From Test Vendor 3
[product_id] => 145
[variation_id] => 0
[subtotal] => 60
[total] => 60
[quantity] => 3
[subtotal_tax] => 5.33
[total_tax] => 5.33
[paypal_email] => tv3#sandbox.com
[vendor_id] => 10
[shipping] => Array
(
[shipping_total] => 25.00
[shipping_tax] => 2.22
)
)
[6] => Array
(
[name] => Product From Vendor 1
[product_id] => 143
[variation_id] => 0
[subtotal] => 20
[total] => 20
[quantity] => 2
[subtotal_tax] => 1.78
[total_tax] => 1.78
[paypal_email] => tv1#sandbox.com
[vendor_id] => 8
[shipping] => Array
(
[shipping_total] => 25.00
[shipping_tax] => 2.22
)
)
)
I need the array to merged as a multi-dimentional array with the paypal email as key and other data as values.. For example,
Array
( [thisismytestpaypal#sandbox.com] => Array
(
[0] => Array
(
[name] => Test Product
[product_id] => 307
[variation_id] => 0
[subtotal] => 30
[total] => 30
[quantity] => 2
[subtotal_tax] => 2.66
[total_tax] => 2.66
[paypal_email] => thisismytestpaypal#sandbox.com
[vendor_id] => 2
[shipping] => Array
(
[shipping_total] => 25.00
[shipping_tax] => 2.22
)
)
[1] => Array
(
[name] => Album
[product_id] => 354
[variation_id] => 0
[subtotal] => 15
[total] => 15
[quantity] => 1
[subtotal_tax] => 1.33
[total_tax] => 1.33
[paypal_email] => thisismytestpaypal#sandbox.com
[vendor_id] => 11
[shipping] => Array
(
[shipping_total] => 25.00
[shipping_tax] => 2.22
)
)
)
[ab2#sandbox.com] => Array
(
[0] => Array
(
[name] => Beanie with Logo
[product_id] => 357
[variation_id] => 0
[subtotal] => 18
[total] => 18
[quantity] => 1
[subtotal_tax] => 1.60
[total_tax] => 1.60
[paypal_email] => ab2#sandbox.com
[vendor_id] => 10
[shipping] => Array
(
[shipping_total] => 25.00
[shipping_tax] => 2.22
)
)
[1] => Array
(
[name] => Long Sleeve Tee
[product_id] => 352
[variation_id] => 0
[subtotal] => 75
[total] => 75
[quantity] => 3
[subtotal_tax] => 6.66
[total_tax] => 6.66
[paypal_email] => ab2#sandbox.com
[vendor_id] => 2
[shipping] => Array
(
[shipping_total] => 25.00
[shipping_tax] => 2.22
)
)
)
[tv3#sandbox.com] => Array
(
[0] => Array
(
[name] => Polo
[product_id] => 353
[variation_id] => 0
[subtotal] => 80
[total] => 80
[quantity] => 4
[subtotal_tax] => 7.10
[total_tax] => 7.10
[paypal_email] => tv3#sandbox.com
[vendor_id] => 8
[shipping] => Array
(
[shipping_total] => 25.00
[shipping_tax] => 2.22
)
)
[1] => Array
(
[name] => Product From Test Vendor 3
[product_id] => 145
[variation_id] => 0
[subtotal] => 60
[total] => 60
[quantity] => 3
[subtotal_tax] => 5.33
[total_tax] => 5.33
[paypal_email] => tv3#sandbox.com
[vendor_id] => 10
[shipping] => Array
(
[shipping_total] => 25.00
[shipping_tax] => 2.22
)
)
)
[tv1#sandbox.com] => Array
(
[0] => Array
(
[name] => Product From Vendor 1
[product_id] => 143
[variation_id] => 0
[subtotal] => 20
[total] => 20
[quantity] => 2
[subtotal_tax] => 1.78
[total_tax] => 1.78
[paypal_email] => tv1#sandbox.com
[vendor_id] => 8
[shipping] => Array
(
[shipping_total] => 25.00
[shipping_tax] => 2.22
)
)
)
)
How can I do that?
Thanks

Answer 1

$orders = [.....]; //your array
$mappedOrders = [];
foreach($orders as $order) {
$mail = $order['paypal_email'];
if(!isset($mappedOrders[$mail])) { $mappedOrders[$mail] = []; } //create new array in map if $mail index not exists
$mappedOrders[$mail][] = $order; // push order into array for mapped array
}
var_dump($mappedOrders);

Answer 2

Do a loop with array key checking
$result = [];
foreach ($array as $value) {
$email = $value['paypal_email']; // Get email
if (!array_key_exists($email, $result)) { // Check if already on the result array
$result[$email] = []; // Create new array with email as key if not
}
$result[$email][] = $value; // push value to email key
}
print_r($result);

Answer 3

Consider first array hold by variable $array. Then iterate it with simple foreach loop and transfer data to new array $newArray with key as value in paypal_email node. Code should be:
$newArray = [];
foreach ($array as $value) {
$newArray[$value['paypal_email']][] = $value;
}
print_r($newArray);

Answer 4

<?php
$data =
[
[
'name' => 'John',
'email' => 'thebeatles#example.com'
],
[
'name' => 'Ringo',
'email' => 'thebeatles#example.com'
],
[
'name' => 'Mick',
'email' => 'thestones#example.com'
],
[
'name' => 'Keith',
'email' => 'thestones#example.com'
],
];
$grouped_by_email = [];
foreach($data as $item)
$grouped_by_email[$item['email']][] = $item;
var_export($grouped_by_email);
Output:
array (
'thebeatles#example.com' =>
array (
0 =>
array (
'name' => 'John',
'email' => 'thebeatles#example.com',
),
1 =>
array (
'name' => 'Ringo',
'email' => 'thebeatles#example.com',
),
),
'thestones#example.com' =>
array (
0 =>
array (
'name' => 'Mick',
'email' => 'thestones#example.com',
),
1 =>
array (
'name' => 'Keith',
'email' => 'thestones#example.com',
),
),
)