• You have something unique to say about PHP.
• Your posts are in english.
• It's a personal blog and not a project blog.
• You have a PHP category and an RSS/Atom feed just for that.
• You already made some posts about PHP.
• It's an advantage, if you are a PHP or PEAR developer.
• Please read also the FAQ.
• And please provide a link to an RSS/Atom feed for just your PHP category, Planet PHP readers usually don't want to read about your cat :)

As always, there are exceptions to the rule, just write into the textarea below, why you think, we should include your blog :)