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Sort array of arrays by sub-array values

We need to sort the array by

price

value

$inventory = array(

   array("type"=>"fruit", "price"=>3.50),
   array("type"=>"milk", "price"=>2.90),
   array("type"=>"pork", "price"=>5.43),

);

The solution is to use

array_multisort

function

$price = array();
foreach ($inventory as $key => $row)
{
    $price[$key] = $row['price'];
}
array_multisort($price, SORT_DESC, $inventory);

In PHP 5.5 or later

array_column

function can be used

$price = array_column($inventory, 'price');

array_multisort($price, SORT_DESC, $inventory);

by Valeri Tandilashvili

PHP

Pro tip: use ```triple backticks around text``` to write in code fences