php sort associative array by value keep key code example

Example 1: php sort array by key

$weight = [
    'Pete' => 75, 
    'Benjamin' => 89,
    'Jonathan' => 101
  ];  	
  ksort($weight);

Example 2: php sort by associative array value

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