Configure php running environment under linux tomcat

Main steps:
1. Open tomcat's cgi
2. Add php-cgi as the executor of cgi
3. Modify the cgi execution path prefix so that php files in all paths under the project can be executed
Detailed steps:
1. Turn on cgi of tomcat.
Refer to tomcat official website method (http://tomcat.apache.org/tomcat-7.0-doc/cgi-howto.html)
(1) Open conf/web.xml and find the servlet and servlet-mapping named cgi , remove their comments. (Tomcat’s configuration file has a cgi configuration instance by default, but it is commented at the beginning. If it is not found, you can search it online)
(2) Open conf/context.xml and add the privileged="true" attribute to the tag.
The above configuration is for tomcat globally. If it is for a certain application, you need to copy the corresponding configuration to the corresponding WEB-INF.
2. Add php-cgi as the cgi executor
First make sure that php is installed correctly and execute the php-cgi command in the terminal.
Open conf/web.xml, find the servlet named cgi, and add the following configuration to it:

executable
php-cgi

3. Modify the cgi execution path prefix
This part is to allow the php file to be executed directly. The default cgi configuration is: you need to put the php file under WEB-INF/cgi of the project, and then access cgi-bin/xxx.php to execute.
(1) Modify the cgiPathPrefix under the servlet and change WEB-INF/cgi to /, as follows:

cgiPathPrefix
/

(2) Modify cgi under servlet-mapping, change /cgi-bin/* to *.php, as follows:

cgi
*.php

After completing the above steps, restart tomcat. The php script can be executed under any project, but it cannot be run directly under webapps/, because the tomcat official website explains cgiPathPrefix as follows:

The CGI search path will start at the web application root directory + File.separator + this prefix.

and above.