CodeIgniter框架 URL 设置

1.       在application/config/config.php 文件中
如图设置base_url 根路径, css_url css路径, js js路径,images images路径.
/*
|--------------------------------------------------------------------------
| Base Site URL
|--------------------------------------------------------------------------
|
| URL to your CodeIgniter root. Typically this will be your base URL,
| WITH a trailing slash:
|
|       http://example.com/
|
*/
$config['base_url']   = "http://localhost/code/";
$config['css_url'] = "http://localhost/code/system/application/views/css/";
$config['js_url'] = "http://localhost/code/system/application/views/js/";
$config['img_url'] = "http://localhost/code/system/application/views/images/";
2.       在system/helpers/url_helper.php文件中
如下配置以上的路径:
// ------------------------------------------------------------------------
/**
* Base URL
*
* Returns the "base_url" item from your config file
*
* @access      public
* @return      string
*/
if ( ! function_exists('base_url'))
{
function base_url()
{
$CI =& get_instance();
return $CI->config->slash_item('base_url');
}
}
/**
* CSS URL
*
* Returns the "CSS URL" item from your config file
*
* @access  public
* @return  string
*/
if (! function_exists('css_url')) {
function css_url(){
$CI =& get_instance();
return $CI->config->slash_item('css_url');
}
}
/**
* JS URL
*
* Returns the "JS URL" item from your config file
*
* @access  public
* @return  string
*/
if (! function_exists('js_url')) {
function css_url(){
$CI =& get_instance();
return $CI->config->slash_item('js_url');
}
}
/**
* IMAGE URL
*
* Returns the "IMAGE URL" item from your config file
*
* @access  public
* @return  string
*/
if (! function_exists('img_url')) {
function css_url(){
$CI =& get_instance();
return $CI->config->slash_item('img_url');
}
}
3.       在view层调用的时候 如下:
<link rel="stylesheet" href="login.css">
<link rel="stylesheet" href="rounded.css">

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