
php
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Recommended PHP reading list
Introduction This list of recommended reading material on PHP is compiled from a variety of online sources by Web application developers in IBM's Global Production Services organization. These resources have been selected with the intention of introducing IT specialists and architects to PHP, providing specific information about development and maintenance, and helping to integrate the technology with IBM products.One of my favorite security measures here at Perishable Press is the site’s virtual Blackhole trap for bad bots. The concept is simple: include a hidden link to a robots.txt -forbidden directory somewhere on your pages. Bots that ignore or disobey your robots rules will crawl the link and fall into the trap, which then performs a WHOIS Lookup and records the event in the blackhole data file. Once added to the blacklist data file, bad bots immediately are denied access to your site. I call it the “one-strike” rule: bots have one chance to follow the robots.txt protocol , check the site’s robots.txt file, and obey its directives. Failure to comply results in immediate banishment.

