I want to find all the predefined values, but why are there none in all files_PHP Tutorial

The best way is to create a new page, use , and load it in the browser. It will display all PHP parameter information, environment variables, WEB server-specific variables, HTTP-related variables...etc. The main reason for not putting the complete variable value in the file is that it will vary from server to server.

http://www.bkjia.com/PHPjc/632411.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/632411.htmlTechArticleThe best way is to create a new page, use ?phpinfo()?, and load it in the browser enter. It will display all PHP parameter information, environment variables, WEB server specific variables, HTTP...