You didn't waste your time.
PHP is a great language, and is used by many applications.

Not alot of sites has 1million hits per day, and none of the sites that anyone here on this forum will produce won't have half that.

But as an example, take vBulletin forum application. There are people who own forums using vBulletin that has over 10 million users. Sure they're not logged on at the same time, but they would probably recieve at least 100.000 logins per day, not to mention all the guests viewing the site.

It depends alot on the webhotel/server you're using.
Sure maybe C allocates memory better or more efficient, but PHP is definitely NOT a waste of time to learn.

Another reference is the many wordpress blogs that you see out there.

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