Question

I want to make an array sort method so you can sort some info via price/ID number etc.

My array is like this:

[1] 1002234985, $123.00, ITEM DESCRIPTION #1

[2] 1034234985, $143.70, ITEM DESCRIPTION #2

[3] 1002467455, $133.06, ITEM DESCRIPTION #3

[4] 1564334985, $883.11, ITEM DESCRIPTION #4

I want to sort the array by price, but have the descriptions and ID numbers match up. How can I do this?

Thanks!

Answer 1

write the compare function (that receives two elements and returns which one is bigger) and use usort to use it

An example:

$arr = array(
              array(1002234985, '125.00', 'ITEM DESCRIPTION'), 
              array(1002234986, '124.00', 'ITEM DESCRIPTION'), 
              array(1002234987, '123.00', 'ITEM DESCRIPTION')
);
function mycomp($itm1, $itm2){
    if($itm1[1] > $itm2[1]){
        return 1;
    }
    else if($itm1[1] < $itm2[1]){
        return -1;
    }
    else{
        return 0;
    }
}
usort($arr, 'mycomp');
print_r($arr);