Sort and merge in a array - php

Question

I have trouble in handle array PHP, I have an array:
[0] {
'email' => 'test#gmail.com',
'meta' => {
'product' => {
'id' => '1',
'content' => 'This is content'
}
}
}
[1] {
'email' => 'test2#gmail.com',
'meta' => {
'product' => {
'id' => '2',
'content' => 'This is content'
}
}
}
[2] {
'email' => 'test2#gmail.com',
'meta' => {
'product' => {
'id' => '3',
'content' => 'This is content'
}
}
}
I need to merge this array by value 'email', like this:
[0] {
'email' => 'test#gmail.com',
'meta' => {
'product' => {
'id' => '1',
'content' => 'This is content'
}
}
}
[1] {
'email' => 'test2#gmail.com',
'meta' => {
'product' => [0] {
'id' => '2',
'content' => 'This is content'
}
[1] {
'id' => '3',
'content' => 'This is content'
}
}
}
Could somebody help me?

Answer 1

$sorted_array = [];
$emails = [];
$i = 0;
foreach ($arr as $array) {
if(!empty($array['email']) && !empty($array['meta']['product'])){
if( in_array($array['email'], $emails)){
$i--;
} else {
$emails[] = $array['email'];
}
$sorted_array[$i]['email'] = $array['email'];
$sorted_array[$i]['meta']['product'][] = $array['meta']['product'];
$i++;
}
}
echo "<pre>";
print_r($sorted_array);
Hope this will help you

Answer 2

Php has many function to sort an Array. You can consult the documentation to choice the better algorithms to your case http://php.net/manual/en/array.sorting.php. And you can merge result Arrays with array_merge function, like it:
array_merge($a1,$a2)
I created an example for your code here:
http://codepad.org/zzkndGQZ

Answer 3

You can use the email like array's key, to end, use array_combine to have indeces since 0 to N number...
<?php
$oldArray = array(
array(
'email' => 'test#gmail.com',
'meta' => array(
'product' => array(
'id' => '1',
'content' => 'This is content'
)
)
), array(
'email' => 'test2#gmail.com',
'meta' => array(
'product' => array(
'id' => '2',
'content' => 'This is content'
)
)
), array(
'email' => 'test2#gmail.com',
'meta' => array(
'product' => array(
'id' => '3',
'content' => 'This is content'
)
)
)
);
$newArray = array();
foreach($oldArray as $element){
if(isset($newArray[$element['email']])) {
if(!isset($newArray[$element['email']]['meta']['product'][0]))
$newArray[$element['email']]['meta']['product'] = array($newArray[$element['email']]['meta']['product']);
$newArray[$element['email']]['meta']['product'][] = $element['meta']['product'];
} else {
$newArray[$element['email']] = $element;
}
}
//For index since 0 to n
print_r(array_combine(range(0,count($newArray)-1), $newArray));

Answer 4

You can build a new array with the sorted informations.
It should be working with something like this, but not tested:
$sorted_array = [];
$i = 0;
foreach ($unsorted_array as $array) {
if(!empty($array['email']) && !empty($array['meta']['product'])){
$sorted_array[$i]['email'] = $array['email'];
$sorted_array[$i]['meta']['product'][] = $array['meta']['product'];
$i++;
}
}
print_r($sorted_array);