https校验优化

public/core.php

@@ -19,7 +19,7 @@ define('APPLICATION_VERSION', 'v1.2.0');
 define('DS', '/');
 
 // HTTP类型
-define('__MY_HTTP__', (empty($_SERVER['HTTPS']) || $_SERVER['HTTPS'] == 'off') ? 'http' : 'https');
+define('__MY_HTTP__', ((!empty($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) !== 'off') || (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] === 'https') || (!empty($_SERVER['HTTP_FRONT_END_HTTPS']) && strtolower($_SERVER['HTTP_FRONT_END_HTTPS']) !== 'off')) ? 'https' : 'http');
 
 // 根目录
 $my_root = empty($_SERVER['SCRIPT_NAME']) ? '' : substr($_SERVER['SCRIPT_NAME'], 1, strrpos($_SERVER['SCRIPT_NAME'], '/'));