Validating addresses php
How would you reset the form after successful submission to clear all fields?
We could go further and create a form validation class, with separate methods for validating text, email, dates, etc, but that's a project in itself. but i want that it displays error "enter valid name address etc" and value does not change, it remains the same that i have given wrong.
It prevents the form from being resubmitted if the landing page is reloaded, and allows us to display validation error messages inline using PHP.
Finally, the code includes PHP commands to re-insert any submitted values back in to the form so they don't have to be retyped in case of an error.
The important characteristics of a form handler is that it verifies that the required variables have been set, and that they have appropriate values.
Remember to be thorough as this is your last (only real) line of defence against malicious scripts. Naming the button is useful in case there are multiple forms on the page. In reality we have special functions for validating email addresses and other data types - as will most Java Script libraries.Gmail is a free POP3 and IMAP webmail service provided by Google.