How to use Asort in PHP to deal with the problem of Chinese sort failure _php skills

There are very handy ways to reorder arrays in PHP--asort, the use of Asort can be seen here. However, when sorting an array containing Chinese keys, asort is sometimes not in alphabetical order. This is mainly a coding problem, if the encoding for UTF-8, it will not be sorted alphabetically, the solution is first converted into GBK encoding, sorted out and then back to UTF-8.

Example: There is an array of $pass, similar in structure to

Array
(
 [0] => stdClass Object
  (
   [username] => John
   [password] => dq9uqqw2+ uudoszpqmnyvgg9l+rhzb6lrzbvdvael9uobnf2ztwunykhzfjhbzch+lrsslrx9esqu/n3gslsua==
  )

 [1] => StdClass Object
  (
   [username] => dick
   [password] => 2p/3j50ibk1bymjhl+7/ tt0d6luoqmn9m8klxjczbcajqth5749jftth17wxibz9p425b4kiv/xdv/7bu4pjaq==
  )

 [2] => stdClass Object
  (
   [username] => Harry
   [Password] => caq8lq0l6uxjprx+scbsbfuojsf+ox98gwo6c/aquxq/y/aj/l/ziegsxrsv+olck7ikojj4izzvx8dmpwzrra==
  )

 [3] => stdClass Object
  (
   [username] => Zhao Liu
   [Password] => taxp4jx0vo3voflyanfgrsjzy76wqqhmnzyan9cyi20ukxlfmscxrfr3p525eimy0pg5zk8btbjos/rymxzjgq==
  )

)

Using the following code, the array will be sorted according to the pinyin of the username.

foreach ($pass as $key) {
 $key->username = iconv (' UTF-8 ', ' GBK ', $key->username);
}
Asort ($pass);
foreach ($pass as $key) {
 $key->username = iconv (' GBK ', ' UTF-8 ', $key->username);
}