根目录截取优化

public/core.php

@@ -35,7 +35,17 @@ define('__MY_HTTP__', (
 ) ? 'https' : 'http');
 
 // 根目录
-$my_root = empty($_SERVER['SCRIPT_NAME']) ? '' : substr($_SERVER['SCRIPT_NAME'], 1, strrpos($_SERVER['SCRIPT_NAME'], '/'));
+$my_root = '';
+if(!empty($_SERVER['SCRIPT_NAME']))
+{
+    $index_pos = strpos($_SERVER['SCRIPT_NAME'], 'index.php');
+    if($index_pos !== false)
+    {
+        $my_root = substr($_SERVER['SCRIPT_NAME'], 1, $index_pos-1);
+    } else {
+        $my_root = substr($_SERVER['SCRIPT_NAME'], 1, strrpos($_SERVER['SCRIPT_NAME'], '/'));
+    }
+}
 define('__MY_ROOT__', defined('IS_ROOT_ACCESS') ? $my_root : str_replace('public'.DS, '', $my_root));
 define('__MY_ROOT_PUBLIC__', defined('IS_ROOT_ACCESS') ? DS.$my_root.'public'.DS : DS.$my_root);