PHP

php sort array by specific key

usort($array, function ($a, $b) {
  return ($a['specific_key'] < $b['specific_key']) ? -1 : 1;
});

associative array sorting by value in php

//php 
$a=array(array("id" => 4,"name"=> "Dog"),array("id" => 1,"name"=> "Cat"),array("id" => 3,"name"=> "Hourse"),array("id" => 2,"name"=> "Bear"),array("id" => 5,"name"=> "Zebra"));
$b = array_column($a,'name'); // which column needed to be sorted
array_multisort($b,SORT_ASC,$a); // sorts the array $a with respective of aray $b

php sort associative array by specific value

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

array_multisort($price, SORT_DESC, $inventory);

php sort by associative array value

//php 7+
usort($inventory, function ($item1, $item2) {
    return $item1['price'] <=> $item2['price'];
});