php easy :: protected form scripts set
Protected Form Scripts Set is intended to protect online contact forms from spam bots. It requires from a person who writes you to specify the security code generated during the session, and automatically rejects all direct accesses to a form. The set contains 2 ready-to-use email form scripts: 1. Plain text version; 2. Attachment version. Both versions provide the same security level, while the second one allows to attach a file restricted to specified file size.