Testing the Software
After you've successfully installed PHP, either as an Apache module or a standalone binary, you should test it to ensure that all required extensions have been successfully compiled in.
You can do this by creating a PHP script containing the following lines:
// name this file "verify.php"
Then, depending on how you chose to compile PHP, do one of the following:
If you compiled PHP as an Apache module, copy this file to your web server's document root (in this example, /usr/local/apache/htdocs/) and then access it by pointing your web browser to http://your_web_server/verify.php.
If you compiled PHP as a standalone binary, execute this script from the command line:
$ /usr/local/bin/php verify.php
In either case, the output should be an HTML page that looks like Figure A.1.
Figure A.1. The output of a phpinfo() call.
Examine this output to ensure that all the extensions you need are active.