, Do Everything
PHP has an awesome amount of extensions and features but was conceived at a time when Web Servers were far less powerful than they are today. Almost every web server ( and mobile phone ! ) has multiple cores, if not multiple CPU’s with multiple cores.
PHP does not take advantage of this very well at all. While PHP is very fast to develop and express your ideas when developing enterprising web applications we often find ourselves looking to other fully fledged languages and frameworks to write a backend, or data-centric web applications because PHP isn’t able to take advantage of the hardware we have at our disposal.
Being able to thread in PHP makes it a real candidate for enterprising applications, and it’ll make your personal home page be able to do things it simply didn’t have the time to do before.