Question

I have an array of mysql records in $allrecords variable.

There are multiple keys for each record and one of the key is called type.

Some of the variable has the same type.

E.g. it looks like this:

Seat
Mercedes
BMW
BMW
Mercedes
Audi
Mercedes
Fiat
Mercedes
Audi
Fiat
Mercedes

The array is unordered now (just grabbed from database) and now I need to order the array items from the most occurance one to the least.

E.g. like this

Mercedes (5)
Audi (3)
BMW (2)
Fiat (2)
Seat (1)

I do not need the numbers (that I get using another foreach loop), so I need it just like this:

Mercedes
Audi
BMW
Fiat
Seat

How to do such this in PHP? Is it possible? I need to group the items based on the type and then order them from the most to the least occurance.

Thanks in advance.

EDIT:
My array look like this:

Array
(
    [0] => stdClass Object
        (
            [id] => 125
            [user_id] => 29
            [show] => 1
            [state] => 1
            [type] => 23
            [subcat_id] => 11
            [category_id] => 2
            [name] => SLK 350


        )


)

Answer 1

<?php

$groups = array();
foreach($allrecords as $record){
    $type = $record->type;
    if(empty($groups[$type]))
        $groups[$type] = 1;
    else
        $groups[$type]++;
}

asort ($groups);
$cars = array_keys($groups);
print_r($cars);