I use the anonymous CVS service to get the latest PHP version, _PHP Tutorial

If you have the GNU autoconf suite, you can generate the configure configuration file yourself from the configure.in file. After downloading PHP from the CVS server and installing it, run make -f build.mk in the root directory of PHP. (Similarly, unless you add the --enable-maintainer-mode option when running configure, configure will not be rebuilt when configure.in changes. Therefore, if you want to change configure.in, you must update it manually. A phenomenon when you run configure Or config.status, you can see that you can find some tags such as @VARIABLE@ in the Makefile)