http://jackwillk.blogspot.com/2010/06/using-owasp-php-esapi-part-1.html

http://jackwillk.blogspot.com/2010/07/using-owasp-php-esapi-part-2.html

http://jackwillk.blogspot.com/2010/07/using-owasp-php-esapi-part-3.html