Sorting

[unidox]

I have an array like this:

 

$array[$row] = array (
    'name' = $name,
    'discount' = $discount,
    'price' = $price
);

 

Now, I have about 200 of those in that array, and im trying to sort by the discount, highest 1st. How would I go about doing that? Thanks.

[systemick]

Take a look at the usort function here:

 

http://www.php.net/manual/en/function.usort.php

 

You could define a function

 

function compare ($array1, $array2) {

  if (array1['discount'] < array2['discount']) {

    return -1;

  } else if (array1['discount'] > array2['discount']) {

    return 1;

  } else {

    return 0;

  }

}

 

then pass the name of this function as the 2nd argument to usort

[AbraCadaver]

Or array_multisort().  When the array is structured like yours it takes a little more work:

 

foreach($array as $key => $val) {
    $discount[$key] = $val['discount'];
}
array_multisort($discount, SORT_DESC, $array);

print_r($array);