How to use thinkphp u method

thinkphp's u method is used to complete the assembly of URL addresses. Its feature is that it can automatically generate the corresponding URL address based on the current URL mode and settings. Its usage syntax is "U('address','parameter' ,'pseudo-static','whether to jump','display domain name');".

The operating environment of this article: Windows 7 system, ThinkPHP version 5.0, Dell G3 computer.

How to use the u method of thinkphp?

U method is used to complete the assembly of the URL address. Its feature is that it can automatically generate the corresponding URL address based on the current URL mode and settings. The format is:

U('地址','参数','伪静态','是否跳转','显示域名');

in the template The advantage of using the U method instead of hard-coding the URL is that once your environment changes or parameter settings change, you don't need to change any code in the template.

The calling format in the template needs to be {:U('address', 'parameter'...)}

Basic usage

Usage examples of U method:

U('User/add') // 生成User模块的add操作地址

Can also support group calls:

U('Home/User/add') // 生成Home分组的User模块的add操作地址

Of course, you can also just write the operation name to indicate calling the current module's

U('add') // 生成当前访问模块的add操作地址

In addition to grouping, module and operation names, we can also pass in some parameters:

U('Blog/read?id=1') // 生成Blog模块的read操作 并且id为1的URL地址

The second parameter of the U method supports incoming parameters and supports two definition methods: array and string. If only string parameters can be defined in the first parameter, the following methods are equivalent:

U('Blog/cate',array('cate_id'=>1,'status'=>1))
U('Blog/cate','cate_id=1&status=1')
U('Blog/cate?cate_id=1&status=1')

However, the following definition method is not allowed to pass parameters:

U('Blog/cate/cate_id/1/status/1')

According to different URL settings of the project, the same U method call can intelligently produce different URL address effects, such as:

U('Blog/read?id=1')

This definition is an example.

If the current URL is set to normal mode, the last generated URL address is:

http://serverName/index.php?m=Blog&a=read&id=1

If the current URL is set to PATHINFO mode, the last generated URL address is:

http://serverName/index.php/Blog/read/id/1

If the current URL is set to REWRITE mode, the URL address finally generated by the same method is:

http://serverName/Blog/read/id/1

If you also set the PATHINFO delimiter:

'URL_PATHINFO_DEPR'=>'_'

That’s it Will generate

http://serverName/Blog_read_id_1

If the current URL is set to REWRITE mode and the pseudo-static suffix is ​​set to html, the final URL address generated by the same method is:

http://serverName/Blog/read/id/1.html

If multiple pseudo-static suffixes are set Static support, then the first pseudo-static suffix will be automatically added to the end of the URL address. Of course, you can also manually specify the pseudo-static suffix to be generated in the U method, for example:

U('Blog/read','id=1','xml')

will generate

http://serverName/Blog/read/id/1.xml

Routing support

The U method can also support routing. If we define a routing rule as:

'news/:id\d'=>'News/read'

Then we can use

U('/news/1')

The final generated URL The address is:

http://serverName/index.php/news/1

Domain name support

If your application involves the operation address of multiple subdomain names, you can also specify the domain name that needs to generate the address in the U method, for example:

U('Blog/read@blog.thinkphp.cn','id=1');

@.

In addition, if the fifth parameter of the U method is set to true, it means that the current domain name is automatically recognized, and the subdomain name of the current address is automatically generated based on the subdomain name deployment settings APP_SUB_DOMAIN_DEPLOY and APP_SUB_DOMAIN_RULES.

If URL_CASE_INSENSITIVE is turned on, lowercase URL addresses will be generated uniformly.

Anchor support

Starting from version 3.1.2, U method can also support generating anchor points in URL addresses, for example:

U('Blog/read#comment','id=1','html')

will generate

http://serverName/Blog/read/id/1.html#comment

If the domain name and anchor are used at the same time, please note that the order is anchor first and then the domain name, for example:

U('Blog/read#comment@blog','id=1');

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