How to sort an array of arrays in php?

Question

In php I have a numerical array of associative arrays:

mainArray: 
[
  array1:[\'title\':\'Record a\',\'order\':\'2\'],
  array2:[\'title\':\'Record b\',\'or         


        

Answer 1

The simplest version, using comparison function and usort:

usort($mainArray, function($a, $b) {
  return $a['order'] - $b['order'];
});