php site_url() 和 base_url() 有什么区别？
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what is the difference between site_url() and base_url()?
提问by Afghan Dev
As I have read in some resources, base_url()and site_url()functions in codeigniterare almost the same, although my version of codeigniter (2.1.3) does not have a site_url() in it's config.php file (in config directory).
正如我在一些资源已阅读，base_url()和site_url()功能codeigniter几乎是一样的，虽然我的版本笨的（2.1.3）没有在它的config.php文件一SITE_URL（）（在config目录）。
Yet are there differences between them in any way since I have seen site_url() with parameters and never seen base_url() holding none?
然而，自从我见过带有参数的 site_url() 并且从未见过 base_url() 不带参数以来，它们之间是否存在任何差异？
回答by Fasil kk
echo base_url(); // http://example.com/website
echo site_url(); // http://example.com/website/index.php
if you want a URL access to a resource (such as css, js, image), use base_url(), otherwise, site_url()is better.
如果你想要一个资源（比如css、js、image）的URL访问，使用base_url()，否则site_url()更好。
for a detailed reference Check this both function in CodeIgniter.
有关详细参考，请检查 CodeIgniter 中的这两个函数。
public function site_url($uri = '')
{
if (empty($uri))
{
return $this->slash_item('base_url').$this->item('index_page');
}
$uri = $this->_uri_string($uri);
if ($this->item('enable_query_strings') === FALSE)
{
$suffix = isset($this->config['url_suffix']) ? $this->config['url_suffix'] : '';
if ($suffix !== '')
{
if (($offset = strpos($uri, '?')) !== FALSE)
{
$uri = substr($uri, 0, $offset).$suffix.substr($uri, $offset);
}
else
{
$uri .= $suffix;
}
}
return $this->slash_item('base_url').$this->slash_item('index_page').$uri;
}
elseif (strpos($uri, '?') === FALSE)
{
$uri = '?'.$uri;
}
return $this->slash_item('base_url').$this->item('index_page').$uri;
}
Base URL function.
基本网址功能。
public function base_url($uri = '')
{
return $this->slash_item('base_url').ltrim($this->_uri_string($uri), '/');
}
回答by sikander
site_url: Returns base_url + index_page + uri_string
site_url: 返回 base_url + index_page + uri_string
base_url: Returns base_url + uri_string
base_url: 返回 base_url + uri_string
See source code of both functions at: https://github.com/EllisLab/CodeIgniter/blob/606fee0e2e0aa6a906db82e77090e91f133d7378/system/core/Config.php
查看这两个函数的源代码：https: //github.com/EllisLab/CodeIgniter/blob/606fee0e2e0aa6a906db82e77090e91f133d7378/system/core/Config.php
回答by Akhilesh krishnan
1. site_url
1.site_url
The purpose of site_urlis that your pages become more portable in the event your URL changes.The site_urlappears with the index.phpfile.
目的site_url是在您的 URL更改时您的页面变得更加便携。site_url该index.php文件随文件一起出现。
Segments can be optionally passed to the function as a string or an array.
可以选择将段作为字符串或数组传递给函数。
echo site_url("news/local/123");
it will give: http://ci.com/index.php/news/local/123
它会给：http: //ci.com/index.php/news/local/123
you can even pass segments as an array:
您甚至可以将段作为数组传递：
$segments = array('news', 'local', '123');
echo site_url($segments);
2. base_url
2. base_url
base_urlis without the index_pageor url_suffixbeing appended.
like site_url, you can supply segments as a string or an array.
base_url没有index_page或url_suffix被附加。像site_url，您可以将段作为字符串或数组提供。
If you want a URL access to a resource use base_urlyou can supply a string to a file, such as an image or stylesheet else site_urlis enough.
如果您想要对资源使用的 URL 访问，base_url您可以为文件提供一个字符串，例如图像或样式表，其他site_url就足够了。
echo base_url("/images/icons/image.png");
回答by Ulett
Or, you can create file .htaccessin the CodeIgniter root folder next to its index.phpfile.
或者，您可以.htaccess在其文件旁边的 CodeIgniter 根文件夹中创建index.php文件。
just add this code on .htaccessfile:
只需在.htaccess文件中添加此代码：
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php/ [L]
this code will make the word index.phpremain unseen.
此代码将使该词index.php保持不可见。
http://localhost/CodeIgniter/index.php/controllersName/
will be changed to this
会改成这个
http://localhost/CodeIgniter/controllersName/
回答by Muhammad Zohaib
site_url() is execute index.php that why site_url is better as compare to base_url.
site_url() 是执行 index.php，为什么 site_url 比 base_url 更好。
回答by TheVigilant
I would like to add when to use base_url() and the site_url() . Basically one can use site_url() while creating links for controllers whereas base_url() can be used where we need to create urls for the assets like loading a css or js file or some image .
我想添加何时使用 base_url() 和 site_url() 。基本上可以在为控制器创建链接时使用 site_url() 而 base_url() 可以用于我们需要为资产创建 url 的地方，例如加载 css 或 js 文件或一些图像。
What I always prefer is to use site_url() for creating links to controllers or ajax urls and base_url() for loading assets .
我总是喜欢使用 site_url() 来创建指向控制器或 ajax url 的链接，并使用 base_url() 来加载资产。
回答by Archangel08
base_url()that is commonly used in Codeignitercan be used even without the .phpextension.
base_url()Codeigniter即使没有.php扩展名也可以使用常用的。
site_url()which is commonly used in Wordpresscustom template can be used even when you just call the post_titleof the blog or the file name with the extension.
site_url()Wordpress即使您只调用post_title博客的 或带有扩展名的文件名，也可以使用自定义模板中常用的。
