Filter multidimension array with conditional logic - php

Question

I have below array,
Array ( [0] => Array ( [location] => X33 [usernumber] => 1 [order] => XX [part_number] => Hi ) [1] => Array ( [location] => X33 [usernumber] => 1 [order] => XX [part_number] => 68730 ) [2] => Array ( [location] => W33 [usernumber] => 2 [order] => YY [part_number] => 68741) [3] => Array ( [location] => W33 [usernumber] => 2 [order] => YY [part_number] => Hello )
I want to filter this array with usernumber = 1, by this it will create 1 array with arrays which have usernumber = 1, similarly it will create for usernumber=2
I had users in DB and will search user in this array,
I tried below code,
$users = $this->admin_model->get_usersforshipment();
foreach ($users as $user) {
$filtered = array_filter($csv_array, function($user)
{ //Below is retrurning as orignal $csv_array, not filtered,
return !empty($user['usernumber']);
});
}
Desired output, when $users['usernumber] == 1
Array ( [0] => Array ( [location] => X33 [usernumber] => 1 [order] => XX [part_number] => Hi ) [1] => Array ( [location] => X33 [usernumber] => 1 [order] => XX [part_number] => 68730 ) )
Desired output, when $users['usernumber] == 2
Array ( [0] => Array ( [location] => W33 [usernumber] => 2 [order] => YY [part_number] => 68741) [1] => Array ( [location] => W33 [usernumber] => 2 [order] => YY [part_number] => Hello )
How can i filter only 2 arrays from Multi Dimension array?

Answer 1

Online Example, Description added after your feedback.
$arr = array(
array ('location' => 'X33',
'usernumber' => 1,
'order' => 'XX',
'part_number' => 'Hi'
),
array ('location' => 'X33',
'usernumber' => 1,
'order' => 'XX',
'part_number' => '68730'
),
array ('location' => 'W33',
'usernumber' => 2,
'order' => 'YY',
'part_number' => '68741'
),
array ('location' => 'W33',
'usernumber' => 2,
'order' => 'YY',
'part_number' => 'Hello'
)
);
$out = array();
$index = $arr[0]['usernumber'];
foreach($arr as $val){
if($index != $val['usernumber'])
$index = $val['usernumber'];
$out[$index][] = $val;
}
echo '<pre>';
print_r($out);

Answer 2

Currently, your array is defined like so:
$array = [
0 => [
'location' => l1
'usernumber' => 1
'order' => 'o1'
],
1 => [
'location' => l2
'usernumber' => 1
'order' => 'o2'
],
2 => [
'location' => l3
'usernumber' => 2
'order' => 'o3'
]
];
A good solution would be to set the usernumber variables as array keys. You could do this while creating the array, or you could alter it after creation. It should look like this:
$array = [
1 => [ // The key is now the usernumber
[
'location' => 'l1'
'order' => 'o1'
],
[
'location' => 'l2'
'order' => 'o2'
]
],
2 => [
[
'location' => 'l3'
'order' => 'o3'
],
]
];
Now you can simple grab the different orders by the usernumber and loop through them:
$orders = $array[1]; // Get all orders from the user with usernumber 1
foreach ($orders as $order) {
print_r($order);
}