In this chapter, you learned how to install and configure PHP 5.1.2 for use with Apache on Linux/UNIX, Mac OS X, or Windows. You learned that various configure options in the Linux/UNIX build script can change the features that are supported. You learned about php.ini and how to change the values of its directives.
Using the phpinfo() function, you tested your installation and produced a list of its configuration values. You created a simple PHP script using a text editor. You examined four sets of tags that you can use to begin and end blocks of PHP code.
Finally, you learned how to use the echo statement or print() function to send data to the browser, and you brought HTML and PHP together into the same script. In the next chapter, you will use these skills to test some of the fundamental building blocks of the PHP language, including variables, data types, and operators.