How to sort an array of associative arrays by value of a given key in PHP?

Question

Given this array:

$inventory = array(

   array(\"type\"=>\"fruit\", \"price\"=>3.50),
   array(\"type\"=>\"milk\", \"price\"=>2.90),
   array(\"         


        

Answer 1

Was tested on 100 000 records: Time in seconds(calculated by funciton microtime). Only for unique values on sorting key positions.

Solution of function of @Josh Davis: Spended time: 1.5768740177155

Mine solution: Spended time: 0.094044923782349

Solution:

function SortByKeyValue($data, $sortKey, $sort_flags=SORT_ASC)
{
    if (empty($data) or empty($sortKey)) return $data;

    $ordered = array();
    foreach ($data as $key => $value)
        $ordered[$value[$sortKey]] = $value;

    ksort($ordered, $sort_flags);

    return array_values($ordered); *// array_values() added for identical result with multisort*
}