你可以给form_open（）一个动作，类似于

form_open(base_url().'your_controller_name/function_name');

您没有删除$config ['index_page']=“index.php”中的文件。

/*
|--------------------------------------------------------------------------
| Index File
|--------------------------------------------------------------------------
|
| Typically this will be your index.php file, unless you've renamed it to
| something else. If you are using mod_rewrite to remove the page set this
| variable so that it is blank.
|
*/
//$config['index_page'] = 'index.php';
 $config['index_page'] = '';

打开应用程序. php
发现并改变：public $indexPage = '';