如何在codeigniter中创建链接？

Question

sorry I do not speak good English, use translator. How can I create links in codeigniter?

What if I want to use permalinks after?

I would have to change the whole system code every time you make a change in permalinks?

Is there a library that manufactures the links from these arguments and behave as configured dynamically?

For example if I want to change the system directory from:

http://testing/webapp/index.php

to:

http://production/index.php

Do I need to change all the code? What is the best practice for this?

Answer 1

You can use codeingiter's methods base_url() and site_url().

At first, you need to load the URL helper in your controller:

$this->load->helper('url');

See their definitions below (According to CI documentation, http://ellislab.com/codeigniter/user-guide/helpers/url_helper.html)

---

site_url()

Returns your site URL, as specified in your config file. The index.php file (or whatever you have set as your site index_page in your config file) will be added to the URL, as will any URI segments you pass to the function, and the url_suffix as set in your config file.

You are encouraged to use this function any time you need to generate a local URL so that your pages become more portable in the event your URL changes.

Segments can be optionally passed to the function as a string or an array. Here is a string example:

echo site_url("news/local/123"); The above example would return something like:

http://example.com/index.php/news/local/123

Here is an example of segments passed as an array:

$segments = array('news', 'local', '123');

echo site_url($segments);

---

base_url()

Returns your site base URL, as specified in your config file. Example:

echo base_url();

This function returns the same thing as site_url, without the index_page or url_suffix being appended.

Also like site_url, you can supply segments as a string or an array. Here is a string example:

echo base_url("blog/post/123");

The above example would return something like:

http://example.com/blog/post/123

This is useful because unlike site_url(), you can supply a string to a file, such as an image or stylesheet. For example:

echo base_url("/_user_guide_src_ci/images/icons/edit.png");

This would give you something like:

http://example.com/images/icons/edit.png