PHP two-dimensional array ordering

For example, an array like the following:

The code is as follows:

$users = Array (
  ' name ' => ' Tom ', ' Age ' =>)
  , Array (' name ' => ' Anny ', ' age ' =>)
  , array (' name ' => ' Jack ', ' age ' =>)
;

Want to be able to sort by age from small to large. The author has collated two methods to come out and share to everybody.

1. Use Array_multisort

Using this method, it is more cumbersome to extract the age out of the one-dimensional array, and then arrange it in ascending order. The specific code is as follows:

The code is as follows:

$ages = Array ();
foreach ($users as $user) {
  $ages [] = $user [' age '];
}
Array_multisort ($ages, SORT_ASC, $users);

After execution, the $users is a sorted array, which can be printed out to see. If you need to first in ascending order by age, and then sorted by name ascending, the method above, is to extract an array of names, the last sort of method called:

The code is as follows:

Array_multisort ($ages, SORT_ASC, $names, SORT_ASC, $users);