This is probably the first time reviews on amazon completely failed me. if you have any coding experience at all, php or otherwise, move on. if you want proper syntax/style, move on. if you have access to [...] or even Google, do so as well. there is nothing in this book that you will not get for free on any random coding related site, except it being free, updated and better. now, if you don't mind paying for crappy content you may get something out of it if you haven't moved passed the "hello world" tutorial.
 Two years later and they are still selling the original edition.
The author claims they don't focus on PHP basics, but rather they provide scripts that can be implemented. Yet a large portions are pretty much function descriptions pulled from php.net:
#4 is print_r();
#5 is serialize();
#8 is phpinfo();
#10 is error_reporting(E_ALL);
#11 is error_reporting(0);
#13 is upload_max_filesize
#14 is register_globals = off
#15 magic_quotes_gpc = 1
#34 is substr()
#35 is strtolower(), strtoupper() and ucwords()
Then they have sections on creating an array from a form via input_field (#27), accessing named form buttons (spoiler, $_POST['name']) or how to check if a data is in the past (wicked cool solution #31). They even provide some impressive regular expressions for validating emails and phone numbers: The former accepts complete gibberish while the latter returns any phone number with 10 digits (or 11 with leading 1) as valid.
Wicked Cool PHP is part PHP manual and part embarrassingly simple "solutions". And then there's the plain bad style such as accessing a string literal array index without quotes ($row[product_name]) or claiming that there is no security issue with the $_REQUEST array (#25 - There has been some debate on how safe $_REQUEST is, but there shouldn't be. ).