What was your favorite feature that was introduced in PHP 5.3?
<p>I'm trying to compile a list of features that were introduced in PHP 5.3. </p>

<p>That I have to check out as time permits. I'd like to do this in the order of usefulness of the features.</p>

<p>The question is subjective, that is the point. I want to end up with a list ordered by what the community liked.</p>

<p>Such a list would hopefully be useful to many who need to do historical research then in the years 2012 or 2013 and I have not been able to find one on SO who did this so far.</p>

<p>Please have named one specific feature per answer, thanks in the past!</p>
