按相同的模型和条件计算foreach循环

Question

I would like to get the count (total) of values in my foreach loop which share the same 'Model' and 'Condtion'.

To help you understand better, here is a representation of how my data looks like

 Product Name            |    Condition
 ---------------------------------------
 iPhone 3G 16GB          |    Used

 iPhone 3G 16GB          |    Used

 iPhone 3G 16GB          |    New

 Blackberry 9900         |    New

 Blackberry 9900         |    New

My current foreach loop:-

 $results = getProducts();

 foreach ($results as $result) {

 $data[] = array (
'model' => $result['model'],
'condition' => $result['condition']
 );  
}

This is what I get with my current foreach loop:-

 Array (

[0] => Array
    (
        [model] => iPhone 3G 16GB
        [condition] => Used
    )

[1] => Array
    (
        [model] => iPhone 3G 16GB
        [condition] => Used
    )

[2] => Array
    (
        [model] => iPhone 3G 16GB
        [condition] => New
    )
[3] => Array
    (
        [model] => Blackberry 9900
        [condition] => New
    )
[4] => Array
    (
        [model] => Blackberry 9900
        [condition] => New
    )
)

Here is how and what I would like to get instead:-

 Array(
 'Apple iPhone 3G 16GB' => Array (
 'Used' => 2,
 'New' => 1
 )
 'Blackberry 9900' => Array (
 'New' => 2 
 )
)

Hope you get an idea of what I'm trying to accomplish here. Please let me know if you would like me to provide any additional info.

Answer 1

This should give you the desired result.

$data = array();
foreach ($results as $result) {
    if (!array_key_exists($result['model'], $data)) {
        $data[ $result['model'] ] = array(
            'Used' => 0,
            'New' => 0
        );
    }
    $data[ $result['model'] ][ $result['condition'] ]++;
}

Keep in mind that alphabetical indices are case sensitive in PHP, so you might want to add a strtolower() to avoid undefined index notices.