Also your script is vulnerable to cross-site scripting if you let visitors use it... e.g. [ooh click me!](javascript:submit_your_cookies_to_my_site();return false;)

To be more constructive -- first off thanks for commenting your code and explaining it to n00bs. Secondly, if you want to use regular expressions, the preg_ functions are supposed to be faster/better. Thirdly, try \'/^34\.12\.233\.254/$\' to match one address or \'/^34\.12\.233\.(1|2)?[0-9]{1,2}/$\' to match a range. ^ means \"Beginning of string\" and $ means \"end\" when they are used in the first and last positions ([^6] means any character except 6)

This script is incorrect... Won\'t it ban you if your IP is \"89.12.34.20\" and it\'s trying to ban \"189.12.34.206\"? Why not use == instead of ereg? It\'ll be faster anyway. This isn\'t Java; == doesn\'t compare identity in PHP but rather value!

A bit more description would be great
thanks mate

I don\'t know, I\'m new here but this snippet seems pretty worthless except for a few special cases. I would like to say this site is a great concept and pretty good implementation though. I would like to see an easy way to see most-used and highest-rated snippets in any language, though!