Calculating Age with PHP

You would think that determining a person's age would be a very simple task for a PHP developer.  However, when I asked this question for myself I found a variety of solutions that people posted online.  Many of them used large functions with conditionals and other logic that was hard to follow.  After a significant amount of research, I've come to find the shortest and most accurate solution to this question.

function current_age($birthdate) {
    return( floor((time()-strtotime($birthdate))/31536000) );

You can pass just about any type date that strtotime() can recognize, which is an added convenience.  If you have a better solution, let's hear about it in the comments.

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Creator of Surreal CMS and other web things. Follow me for tweets about JavaScript, CSS, and web programming.