Use this script in your contact form, for you whois query tool or just there where some extra validation is needed. A session will be created inside a dynamic image file (requires GD library). The random value of this image appears inside the generated CAPTCHA image. The user has to enter this value into formfield. This value will be checked while processing the form. Without entering this value a form will not be processed.
Dieses Captcha ist eine grafische Sicherheitsabfrage, für z.B. Gästebücher und Formulare. Es dient dazu, vor Spammern zu schützen.
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When developing web applications in PHP (or any other languages for that matter) there are several security aspects we should consider. In this ar ...
Block User-agents via PHP. Very handy in keeping out unwanted e-mail harvesting programs, programs that copy websites, etc.
The Lib2 PHP Library provides user authentication via sessions, statistics collection, forms management, an interface to SQL engines, formatting t ...
The MD5 (Message-Digest algorithm 5) is a widely used cryptographic hash. It is often used to save sensitive data like passwords in a database or ...
Mit Hilfe von eBiene simpleCrypter ist es möglich eine Zeichenkette oder auch eine beliebige Zahl zu kodieren/verschlüsseln und diese auch zu de ...
A platform-idependent, web-based, secure application for storing and retrieving usernames and passwords.
phpSecurePages is a PHP module to secure pages with a login name and password. It can handle multiple user groups (each with their own viewing rig ...
