On the Zend Developer Zone today, Cal Evans has posted his own review of the O'Reilly book "Learning PHP & MySQL" (by Michele E. Davis and Jon A. Phillips).
Learning PHP & MySQL by Michele E. Davis and Jon A. Phillips is targeting graphic designers, Flash developers and others who build web sites but want to know more about the programming side of things. It assumes a basic knowledge of HTML and the web in general. There's really nothing in this book that anyone with an interest in programming and access to a computer couldn't use to expand their skills a bit.
He goes on to talk about what the book contains (and what it doesn't) and some of his inital impressions about the level of content ("There's really no need to show us a graphic of the Apache EULA screen. Just tell us to 'Install Apache by following the on-screen instructions.'").
He reiterates how basic the level of the book is by mentioning the introductory chapters on PHP, MySQL, and using them together. Of course, from there, the topics do get a bit harder - security, PEAR, regular expressions, etc. The book rounds itself out with a sample app - a blog.
Obviously, this is just a basic summary of what Cal has said, so be sure to check out the rest of the review.