Using the three free, open-source and original system components (PHP, MySQL, and phpMyAdmin) to develop, test, and deploy Web applications locally is almost the only best option available at the moment. Thereinto, Apache Web server and PHP hypertext preprocessor are preinstalled on Mac. But they are not enabled by default, and the pre-installed version of PHP lacks many utility features. The MySQL needs to be installed and configured separately. Unless you are able to expertly use command lines in Terminal, installing the one-stop solution MAMP (PRO) is much simpler and more efficient.

If you're a web developer or learning web programming languages, you must found that: every time want to perform local debugging, testing for your web app/code on a new OS or another PC, you has to set up and configure the whole AMP (Apache, PHP, MySQL) web development environments from scratch, which is absolutely boring.