How to sort associative arrays by value of a given key and maintain key in php? -


this question has answer here:

given array

$inventory = array(     "sdfsdfsdsx65fsdf1"=>array("type"=>"fruit", "price"=>3.50),     "sdfsdfsdsx65fsdf2"=>array("type"=>"milk", "price"=>2.90),     "sdfsdfsdsx65fsdf3"=>array("type"=>"pork", "price"=>5.43) );

i want output below

$inventory = array(     "sdfsdfsdsx65fsdf3"=>array("type"=>"pork", "price"=>5.43),     "sdfsdfsdsx65fsdf1"=>array("type"=>"fruit", "price"=>3.50),     "sdfsdfsdsx65fsdf2"=>array("type"=>"milk", "price"=>2.90)   ); 

$inventory = array(   array("sdfsdfsdsx65fsdf1"=>array("type"=>"fruit", "price"=>3.50)),   array("sdfsdfsdsx65fsdf2"=>array("type"=>"milk", "price"=>2.90)),   array("sdfsdfsdsx65fsdf3"=>array("type"=>"pork", "price"=>5.43)) );  usort($inventory, function($a, $b) {   foreach ($a $a);   foreach ($b $b);   if ($a['price'] == $b['price']) return 0;   return ($a['price'] < $b['price']) ? 1 : -1; });  print_r($inventory);

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