Many beginners want to create their own forms to let their users input and submit data to them. Here we teach you how you can create these forms, and use PHP to enhance their capability. Radio buttons, checkboxes, and regular text boxes are a few of the items covered.
Intended for programmers interested in experimenting with complex user interface elements, this tutorial explores using PHP to generate JavaScript based on data in a database. This tutorial explains a class called chainedSelectors. This class helps you create a SELECT form field that automatically updates the value of another SELECT using JavaScript. PHP is used to retrieve the values for the selectors from a MySQL database. This data is then used to create a JavaScript function that's triggered when the value of the first selector is changed.
Learn how to create an expandable Form Validation Class using PHP's object oriented features that once complete, can be easily customized and expanded to suit your needs in the future with no changes to the base code. The Class will able to validate everything from Email Address, Passwords, User Names, Domain Names, Credit Cards, Numbers, Strings, HTML, Etc. Very detailed with extensive code segments to guide you every step of the way.
Every now and then for some reason a user will feel compelled to send a message to a webmaster. By using a form this makes the process much easier from both points of view. The user does not have to search for an e-mail address and open an e-mail client, and the webmaster is presented with a relatively well formatted message.
Checkboxes in web forms are useful because they allow the person filling out the form to choose from a wide range of possible choices. Specifically, it allows the user to choose some, all or none of the elements. Although checkboxes are excellent form elements for certain tasks, there is often confusion about how to store checkbox data correctly. This article will demonstrate how to store checkbox data in a database, in a manner that follows good database design principles.
This is an illustration of how to send email through PHP. I did not create a function because I feel mail() is already a wrapper all by itself. I left the first parameter empty because I feel that the "to row" is not any more important than any other row in the header string.
If your PHP program is a dynamic web page (and it probably is) and your PHP program is dealing with user input (and it probably is), then you need to work with HTML forms.
Tips for simplifying, securing, and organizing your form-handling PHP code.