Merging the two array of arrays based on a field value - php

Question

There are two arrays of arrays. $user and $experience are two arrays and i want to achieve $final as my expected output.
I have two arrays:
$user = [
[
"country" => "aus",
"new_experiences" => 0,
"new_users" => 6
],
[
"country" => "jpn",
"new_experiences" => 0,
"new_users" => 5
]
];
$experience = [
[
"country" => "jpn",
"new_experiences" => 12,
"new_users" => 0
],
[
"country" => "usa",
"new_experiences" => 10,
"new_users" => 0
]
];
After merging these two arrays based on country, how can i get:
$final = [
[
"country" => "aus",
"new_experiences" => 0,
"new_users" => 6
],
[
"country" => "jpn",
"new_experiences" => 12,
"new_users" => 5
],
[
"country" => "usa",
"new_experiences" => 10,
"new_users" => 0
]
];

Answer 1

Try this
array_unique(array_merge($array1,$array2), SORT_REGULAR);
http://se2.php.net/manual/en/function.array-unique.php

Answer 2

You can achieve your GOal using this simple steps:
Iterate and arrange your array into a single array using foreach
Create a key-value array, just like I have created $issetArray
Push all the value in a $final array, you will get the desired output
I have created a simple logic using foreach loop, isset() and array_push()
$user = array(
array(
"country" => "aus",
"new_experiences" => 0,
"new_users" => 6
),
array(
"country" => "jpn",
"new_experiences" => 0,
"new_users" => 5
)
);
$experience = array(
array(
"country" => "jpn",
"new_experiences" => 12,
"new_users" => 0
),
array(
"country" => "usa",
"new_experiences" => 10,
"new_users" => 0
)
);
$final = array();
$issetArray = array();
foreach($user as $key => $value)
{
if(isset($issetArray[$value['country']]))
{
$issetArray[$value['country']]['new_experiences'] = $value;
$issetArray[$value['country']]['new_users'] = $value;
}
else
{
$issetArray[$value['country']] = $value;
}
}
foreach($experience as $key => $value)
{
if(isset($issetArray[$value['country']]))
{
$issetArray[$value['country']]['new_experiences'] = $value['new_experiences'];
$issetArray[$value['country']]['new_users'] = $value['new_users'];
}
else
{
$issetArray[$value['country']] = $value;
}
}
foreach($issetArray as $value)
{
array_push($final, $value);
}
echo "<pre>";
print_r($final);
Click on the link to know more about isset() and array_push()