Stefan Gabos | webdeveloper
Example for: Zebra_Form, a jQuery augmented PHP library for HTML form building and validation

A contact form

Note the uneditable prefixes (text and images) for some of the fields.

Check the "Template source" tab to see how it's done!

Your email address will not be published.
Enter the URL of your website, if you have one.
  • try clicking on the submit button without filling the form and then, as you fill the form, to see the JavaScript validation in action
  • for each example, notice how the PHP code of the form remains basically unchanged, despite the template variations
  • disable JavaScript to see the server-side validation in action
  • although in all my examples I use HTML output, you can switch to XHTML output by using the doctye method
  • try the example in another browser and see that it works, out of the box. including IE6!

    // include the Zebra_Form class
    require 'path/to/Zebra_Form.php';

    // instantiate a Zebra_Form object
    $form = new Zebra_Form('form');

    // the label for the "name" element
    $form->add('label', 'label_name', 'name', 'Your name:');

    // add the "name" element
    $obj = $form->add('text', 'name', '', array('style' => 'width: 195px', 'data-prefix' => 'img:public/images/user.png'));

    // set rules

        // error messages will be sent to a variable called "error", usable in custom templates
        'required' => array('error', 'Name is required!')


    // "email"
    $form->add('label', 'label_email', 'email', 'Your email address:');
    $obj = $form->add('text', 'email', '', array('style' => 'width: 195px', 'data-prefix' => 'img:public/images/letter.png'));
        'required'  =>  array('error', 'Email is required!'),
        'email'     =>  array('error', 'Email address seems to be invalid!'),
    $form->add('note', 'note_email', 'email', 'Your email address will not be published.');

    // "website"
    $form->add('label', 'label_website', 'website', 'Your website:');
    $obj = $form->add('text', 'website', '', array('style' => 'width: 400px', 'data-prefix' => 'http://'));
        'url'   =>  array(true, 'error', 'Invalid URL specified!'),
    $form->add('note', 'note_website', 'website', 'Enter the URL of your website, if you have one.');

    // "subject"
    $form->add('label', 'label_subject', 'subject', 'Subject');
    $obj = $form->add('text', 'subject', '', array('style' => 'width: 400px', 'data-prefix' => 'img:public/images/comment.png'));
        'required' => array('error', 'Subject is required!')

    // "message"
    $form->add('label', 'label_message', 'message', 'Message:');
    $obj = $form->add('textarea', 'message');
        'required'  => array('error', 'Message is required!'),
        'length'    => array(0, 140, 'error', 'Maximum length is 140 characters!', true),

    // "submit"
    $form->add('submit', 'btnsubmit', 'Submit');

    // if the form is valid
    if ($form->validate()) {

        // show results

    // otherwise
    } else

        // generate output using a custom template

    // don't forget about this for custom templates, or errors will not show for server-side validation
    // $zf_error is automatically created by the library and it holds messages about SPAM or CSRF errors
    // $error is the name of the variable used with the set_rule method
    echo (isset($zf_error) ? $zf_error : (isset($error) ? $error : ''));

<!-- elements are grouped in "rows" -->
<div class="row">

    <!-- things that need to be side-by-side go in "cells" and will be floated to the left -->
    <div class="cell"><?php echo $label_name . $name?></div>
    <div class="cell"><?php echo $label_email . $email . $note_email?></div>


<!-- notice the "even" class which is used to highlight even rows differently
from the odd rows -->
<div class="row even"><?php echo $label_website . $website . $note_website?></div>

<div class="row"><?php echo $label_subject . $subject?></div>

<div class="row even"><?php echo $label_message . $message?></div>

<!-- the submit button goes in the last row; also, notice the "last" class which
removes the bottom border which is otherwise present for any row -->
<div class="row last"><?php echo $btnsubmit?></div>
<!-- must be in strict mode! -->
<!doctype html>



        <meta charset="utf-8">

        <title>Zebra_Form Example</title>

        <!-- load Zebra_Form's stylesheet file -->
        <link rel="stylesheet" href="path/to/zebra_form.css">




            the content from the "PHP Source" tab goes here


        <!-- we're loading the JavaScript files at the bottom of the page so we don't delay page rendering -->

        <!-- try to load jQuery from CDN server and fallback to local source if not available -->
        <script src="//"></script>
        <script>window.jQuery || document.write('<script src="path/to/jquery-1.9.1.min.js"><\/script>')</script>

        <!-- load Zebra_Form's JavaScript file -->
        <script src="path/to/zebra_form.js"></script>