The PEAR::HTML_QuickForm package provides methods for creating, validating, processing HTML forms.
QuickForm is a convenience library for dealing with HTML forms.
QuickForm consists of multiple files. The main file is QuickForm.php and should be installed in
your pear/HTML directory. The other important files are element.php,
which handles all methods relative to form elements, and group.php, which deals with
methods relative to groups of elements in the form. Both are located in your HTML/QuickForm
directory along with the other form objects. input.php contains a common class for all
the elements of input type (text, password...). QuickForm has objects for all the common form elements:
select, text, password, checkbox, file, submit, reset, button, image, radio, hidden, textarea.
QuickForm provides the possibility to create your own elements as long as you comply with the common API.
This section covers the methods QuickForm offers for managing form element's values and working with submitted values.
QuickForm can also make use of filters for data import into the form or for data processing once the form has been submitted. Filters work the same way as rules except that you don't need to register them. You write your filter functions and call them in your script. You can call any php function (ie. trim, addslashes, htmlentities, etc.) and have them applied recursively to your element values.
Your form can be customised in many ways.
QuickForm can use different kind of renderers and provides a default one which allows for customization
of the form, the elements, the error messages, the headers, the required elements note and the required
elements sign. You can also write your own renderers.
These renderers are based on pre-3.0 HTML_QuickForm code and require no external classes to do their work.
These renderers use template engines to actually generate the HTML for the form.
If you want to modify an existing renderer or write a new one, this section will be of interest to you.