How to sort associative arrays in descending order, according to the value in php ?

<?php

$age= array("Peter"=>"", "Ben"=>"", "Joe"=>"");

arsort($age);

?>

Using usort + anonymous function

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

http://php.net/manual/en/functions.anonymous.php

You can do an ascending sort like this:

usort($inventory, function ($item1, $item2) {

    return $item1['price'] <=> $item2['price'];

});

Or a descending sort like this:

usort($inventory, function ($item1, $item2) {

    return $item2['price'] <=> $item1['price'];

});