Compare and combine multidimensional array then sort descending PHP - php

Question

I have 2 multi arrays, profiles and encoded arrays like this
$profiles = array(
array(
'user_id' => 'fcc3d884-fbef-438a-9c86-0ad52c9b1223',
'first_name' => 'Narñia',
'middle_name' => 'Ñ',
'last_name' => 'Cruz',
'ext' => ''
),
array(
'user_id' => '0d31557d-1e9f-4db3-ac0d-72e1709fe89c',
'first_name' => 'Randy',
'middle_name' => 'O',
'last_name' => 'Rocker',
'ext' => ''
),
array(
'user_id' => '0f93f169-cf56-49df-a76b-7596446104c6',
'first_name' => 'Qwerty',
'middle_name' => 'K',
'last_name' => 'Asdfg',
'ext' => ''
),
array(
'user_id' => '23b1f4a2-034c-43b4-96b7-3191d78cead1',
'first_name' => 'Johny',
'middle_name' => 'L',
'last_name' => 'Walker',
'ext' => ''
)
);
$encoded = array(
array(
'encoder_id' => '0d31557d-1e9f-4db3-ac0d-72e1709fe89c',
'fullname' => 'Randy O. Rocker',
'encoded' => 10,
),
array(
'encoder_id' => '23b1f4a2-034c-43b4-96b7-3191d78cead1',
'fullname' => 'John L. Walker',
'encoded' => 20,
)
);
Now i want to get some data from $profiles then combine to $encoded array when user_id and encoder_id is match, i have this code but it seems wrong it only gets "John L. Waler" data. here's my code.
$data = [];
foreach ($profiles as $key => $val) {
$user_id = $val['user_id'];
foreach($encoded as $k => $v){
$ext_name = ($val['ext'] == '') ? '' : $val['ext'];
$fullname = $val['first_name'].' '.substr($val['middle_name'], 0, 1).'. '.$val['last_name'].' '.$ext_name;
$data[$key] = array(
'id' => ($v['encoder_id'] == $user_id) ? $v['encoder_id'] : $user_id,
'fullname' => ($v['encoder_id'] == $user_id) ? $v['fullname'] : $fullname,
'encoded' => ($v['encoder_id'] == $user_id) ? $v['encoded'] : 0
);
}
}
echo '<pre>';
print_r($data);
echo '</pre>';
here's the result
Array
(
[0] => Array
(
[id] => fcc3d884-fbef-438a-9c86-0ad52c9b1223
[fullname] => Narñia �. Cruz
[encoded] => 0
)
[1] => Array
(
[id] => 0d31557d-1e9f-4db3-ac0d-72e1709fe89c
[fullname] => Randy O. Rocker
[encoded] => 0 //this should be 10
)
[2] => Array
(
[id] => 0f93f169-cf56-49df-a76b-7596446104c6
[fullname] => Qwerty K. Asdfg
[encoded] => 0
)
[3] => Array
(
[id] => 23b1f4a2-034c-43b4-96b7-3191d78cead1
[fullname] => John L. Walker
[encoded] => 20
)
)
Also after combining them to a new array. i want to sort the new array by "encoded" attribute descending.
Thank you for understanding

Answer 1

You can make your life easier by re-indexing the $encoded array by the encoder_id values using array_column; then you don't have to search the array each time to look for a user_id value, you can just use isset. Once you've extracted your data, you can use usort to sort by the encoded values:
$encoded_ids = array_column($encoded, null, 'encoder_id');
$data = array();
foreach ($profiles as $profile) {
$user_id = $profile['user_id'];
if (isset($encoded_ids[$user_id])) {
$data[] = array('id' => $user_id,
'fullname' => $encoded_ids[$user_id]['fullname'],
'encoded' => $encoded_ids[$user_id]['encoded']
);
}
else {
$data[] = array('id' => $user_id,
'fullname' => "${profile['first_name']} ${profile['middle_name']} ${profile['last_name']}",
'encoded' => 0
);
}
}
usort($data, function ($a, $b) { return $b['encoded'] - $a['encoded'];});
print_r($data);
Output:
Array
(
[0] => Array
(
[id] => 23b1f4a2-034c-43b4-96b7-3191d78cead1
[fullname] => John L. Walker
[encoded] => 20
)
[1] => Array
(
[id] => 0d31557d-1e9f-4db3-ac0d-72e1709fe89c
[fullname] => Randy O. Rocker
[encoded] => 10
)
[2] => Array
(
[id] => fcc3d884-fbef-438a-9c86-0ad52c9b1223
[fullname] => Narñia Ñ Cruz
[encoded] => 0
)
[3] => Array
(
[id] => 0f93f169-cf56-49df-a76b-7596446104c6
[fullname] => Qwerty K Asdfg
[encoded] => 0
)
)
Demo on 3v4l.org

Answer 2

An alternative to Nick's version, using array_reduce:
$encodedByEncoderId = array_column($encoded, null, 'encoder_id');
$combined = array_reduce($profiles, function (array $combined, array $profile) use ($encodedByEncoderId): array {
$combined[] = [
'id' => $profile['user_id'],
'fullname' => $encodedByEncoderId[$profile['user_id']]['fullname']
?? "{$profile['first_name']} {$profile['middle_name']}. {$profile['last_name']}",
'encoded' => $encodedByEncoderId[$profile['user_id']]['encoded']
?? 0
];
return $combined;
}, []);
Demo: https://3v4l.org/kKBru

Answer 3

Try this!
$data = [];
foreach ($profiles as $key => $val) {
$user_id = $val['user_id'];
$is_matched = 0;
$encoded_data = [];
foreach($encoded as $k => $v){
if ($user_id == $v['encoder_id']) {
$is_matched = 1;
$encoded_data = $v;
}
}
$ext_name = ($val['ext'] == '') ? '' : $val['ext'];
$fullname = $val['first_name'].' '.substr($val['middle_name'], 0, 1).'. '.$val['last_name'].' '.$ext_name;
$data[$key] = array(
'id' => ($is_matched == 1) ? $encoded_data['encoder_id'] : $user_id,
'fullname' => ($is_matched == 1) ? $encoded_data['fullname'] : $fullname,
'encoded' => ($is_matched == 1) ? $encoded_data['encoded'] : 0
);
}