Vdaemon - Web Form Validation

VDaemon provides several custom HTML tags (VDaemon tags) to allow developer define form validation rules and some PHP functions to define validation behavior. VDaemon is intended for web developers who have at least basic PHP experience. VDaemon gives mechanism for all common types of standard validation - for example, testing for valid dates or values within a range - plus ways to provide custom-written validation. In addition, VDaemon allow you to completely customize how error information is displayed to the user. You enable validation of user input by adding VDaemon tags to your form as you would with other HTML tags. Each validation tag references an input tag on the form. When the user's input is being processed (for example, when the form is submitted), the VDaemon tests the user's input and set a state to indicate whether the entry passed the test. If any of validation checks failed, the entire form is set to invalid.