php|architect
php|a is a magazine directed towards PHP developers. It’s the most successful magazine that focuses purely on PHP. They release an issue every month and they’re on their 4th year so far, with no signs of slowing.
I just ordered the last 4 issues (they offer both a digital [pdf] and printed version), and I really like it 
If you are a PHP developer then I think this magazine will interest you greatly. While it doesn’t really hold content you couldn’t find online somewhere, it’s composed and written for you. That means every month, you get a range of topics that you might not have thought about before! December’s issue held an interesting article on Drupal — which actually prompted me to try the magazine in the first place.
(And before anyone comments: Yes, I’ve said I don’t like PHP in the past. But that doesn’t mean I’m going to give it up 
I still develop with it on a daily basis.)