Fatal error: Uncaught TypeError: usort(): Argument #1 ($array) must be of type array, null given in /www/wwwroot/diaoyudashi.cc/rank.php:32 Stack trace: #0 /www/wwwroot/diaoyudashi.cc/rank.php(32): usort() #1 {main} thrown in /www/wwwroot/diaoyudashi.cc/rank.php on line 32