PHP short URL super simple code

Super simple code for php short URL
System environment:
php, apache2, linux

Operation to generate php short URL:
Copy the code to index.php and put it in a folder name with only 1 character (such as u) in the secondary directory.
Add write permissions to this directory. To save trouble, just chmod 777 u (the root directory is also OK, you may need to change the code to avoid affecting other files)

The URL generation result:
Put http://www.heimaolianmeng.com/ heimaoseojishu/ becomes http://127.0.0.1/u/1
The principle of php generating short URL:
1. Get the url to be shortened through form post
2. Put the url in a javascript and write it to the file. Names grow by numbers. The function of javascript is to jump to the specified url

Optimization:
If you can set a second-level domain name, just point the second-level domain name to that directory, and there is no need to enter an extra u/.

Code:


Code example: