Sort multi-dimensional array by specific key

Question

I have an array:

Array (     [0] => stdClass Object (         [user_id] => 1         [ID] => 1         [user_login] => admin         [display_name] => admin         [user_email] => [email protected]         [meta_value] => a:1:{s:13:\"administrator\";s:1:\"1\";}     )     [1] => stdClass Object (         [user_id] => 4         [ID] => 4         [user_login] => ungtinflytande         [display_name] => ungtinflytande         [user_email] => [email protected]         [meta_value] => a:1:{s:13:\"administrator\";s:1:\"1\";}     )     [2] => stdClass Object (         [user_id] => 5         [ID] => 5         [user_login] => inflytandepilot         [display_name] => inflytandepilot         [user_email] => [email protected]         [meta_value] => a:1:{s:6:\"author\";s:1:\"1\";}     )     [3] => stdClass Object (         [user_id] => 11         [ID] => 11         [user_login] => matsbohman         [display_name] => matsbohman         [user_email] => [email protected]         [meta_value] => a:1:{s:6:\"editor\";s:1:\"1\";}     )     [4] => stdClass Object (         [user_id] => 12         [ID] => 12         [user_login] => klarakviberg         [display_name] => klarakviberg         [user_email] => [email protected]         [meta_value] => a:1:{s:13:\"administrator\";s:1:\"1\";}     ) ) 

...that I wanna sort by the display_name key. I currently print it like this:

foreach ($blogusers as $bloguser) {     ... } 

How do I do this?

Answer 1

You would use usort() - http://php.net/usort

My suggestion would be:

    function cmp($a, $b)     {         return strcmp($a->display_name, $b->display_name);     }      usort($blogusers, "cmp");      foreach ($blogusers as $bloguser)     {         ... 

Answer 2

See usort: http://php.net/manual/en/function.usort.php

usort($array, "my_cmp");  function my_cmp($a, $b) {   if ($a->display_name == $b->display_name) {     return 0;   }   return ($a->display_name < $b->display_name) ? -1 : 1; }