PHP contact form - Rejecting invalid entries

[random1739]

Hi everyone, I've used Smarty (Smarty : Template Engine) to make a PHP-powered Contact page for a web site.

At the moment it works fine and displays fine, but I'd like to redirect the user to an error page if they forget to include their return email address.

Here's the complete code from the PHP page:

PHP Code:

<?php

require_once('libs/Smarty.class.php');
$smarty = new Smarty;
$smarty->compile_check = true;
$smarty->debugging = false;

if (isset($_POST['action']) && $_POST['action'] == 'Submit request')
{
    $body = '';
    $body .= 'How did you hear about Dive Adventures? ' . $_POST['heard'] . "\n";
    $body .= "\n";
    $body .= '* Your adventure' . "\n";
    $body .= 'Which destination are you interested in? ' . $_POST['holiday'] . "\n";
    $body .= 'When do you intend to travel? ' . $_POST['month'] . ' ' . $_POST['year'] . "\n";
    $body .= 'What type of diving do you enjoy doing? ' . $_POST['diving_type'] . "\n";
    $body .= 'Number of guests: ' . "\n";
    $body .= 'Adults: ' . $_POST['adults'] . ' (' . $_POST['adult_divers'] . ' are divers)' . "\n";
    $body .= 'Children: ' . $_POST['children'] . ' (' . $_POST['child_divers'] . ' are divers)' . "\n";
    $body .= 'Infants: ' . $_POST['infants'] . ' (' . $_POST['infant_divers'] . ' are divers)' . "\n";
    $body .= 'Comments: ' . "\n";
    $body .= $_POST['comments'] . '.' . "\n";
    $body .= "\n";
    $body .= '* Your details' . "\n";
    $body .= 'Name ' . $_POST['name'] . "\n";
    $body .= 'Email ' . $_POST['email'] . "\n";
    $body .= 'Address ' . $_POST['address'] . "\n";
    $body .= 'City ' . $_POST['city']  . "\n";
    $body .= 'Postcode ' . $_POST['postcode']  . "\n";
    $body .= 'State ' . $_POST['state']  . "\n";
    $body .= 'Country ' . $_POST['country']  . "\n";
    $body .= 'Contact by telephone? ' . ($_POST['contactbytelephone'] ? 'Yes' : 'No' ) . "\n";
    $body .= 'Telephone number ' . $_POST['phone'] . "\n";
    $body .= 'Monthly newsletter? ' . ($_POST['receivenewsletter'] ? 'Yes' : 'No' ) . "\n";
    //echo str_replace("\n", '<br>', $body);

    $to = 'divesydney@optusnet.com.au';
    $from = "diveadventures <sydney@diveadventures.com.au>";
    $subject = "Holiday information - From www.diveadventures.com.au";
    $headers = "From: $from";
    mail($to, $subject, $body, $headers);

    $smarty->assign('submit', 1);
    
}


smarty_constants(&$smarty);

$smarty->display('head.tpl');
$smarty->display('contact.tpl');
$smarty->display('tail.tpl');


function smarty_constants(&$smarty)
{
    $HEARDS = array (
        'The Internet' => 'The Internet',
        'Word of Mouth' => 'Word of Mouth',
        'Business reference' => 'Business reference',
        'Advertisement' => 'Advertisement',
        'Dive magazine' => 'Dive magazine',
        'Other' => 'Other'
    );

    $smarty->assign('heards', $HEARDS);


    $HOLIDAYS = array (
        'Australia / Great Barrier Reef' => 'Australia / Great Barrier Reef',
        'Cocos (Keeling) / Christmas Islands' => 'Cocos (Keeling) / Christmas Islands',
        'Cook Islands' => 'Cook Islands',
        'East Timor' => 'East Timor',
        'Fiji' => 'Fiji',
        'Indonesia' => 'Indonesia',
        'Liveaboards' => 'Liveaboards',
        'Malaysia' => 'Malaysia',
        'Maldives' => 'Maldives',
        'Marshall Islands' => 'Marshall Islands',
        'Micronesia' => 'Micronesia',
        'Niue' => 'Niue',
        'Papua New Guinea' => 'Papua New Guinea',
        'Philippines' => 'Philippines',
        'Red Sea / Egypt' => 'Red Sea / Egypt',
        'Solomon Islands' => 'Solomon Islands',
        'Tahiti' => 'Tahiti',        
        'Tonga' => 'Tonga',        
        'Vanuatu' => 'Vanuatu',        
        'Western Samoa' => 'Western Samoa',        
        'Other (Refer to comments)' => 'Other (Refer to comments)'
        
    );

    $smarty->assign('holidays', $HOLIDAYS);


    $DIVING_TYPES = array (
        'Wreck' => 'Wreck',
        'Cave' => 'Cave',
        'Reef' => 'Reef',
        'Wall' => 'Wall',
        'Temperate Water' => 'Temperate Water',
        'Tropical' => 'Tropical',
        'Deep' => 'Deep',
        'Drift' => 'Drift',
        'Exploratory' => 'Exploratory',
        'Live-aboards' => 'Live-aboards',
        'Technical Diving' => 'Technical Diving',
        'Mixed Gases' => 'Mixed Gases'
    );

    $smarty->assign('diving_types', $DIVING_TYPES);


    $MONTHS = array (
        'January' => 'January',
        'February' => 'February',
        'March' => 'March',
        'April' => 'April',
        'May' => 'May',
        'June' => 'June',
        'July' => 'July',
        'August' => 'August',
        'September' => 'September',
        'October' => 'October',
        'November' => 'November',
        'December' => 'December'
    );

    $smarty->assign('months', $MONTHS);

    $YEARS = array (
        '2007' => '2007',
        '2008' => '2008',
        '2009' => '2009',
        '2010' => '2010',
    );

    $smarty->assign('years', $YEARS);

    return;
}

?>

[Xnuiem]

The best thing to do is use JavaScript to do it on the orginal page, so they dont even have to wait for a new load.

Here is a decent article on how to do it:

JavaScript Form Validation

If you get lost, post back and I will give you a specific example of a slightly different method I use within my apps.

[random1739]

I'm not all that familiar with using javascript.

When I tried to insert that code in the html template page (on which the PHP script is run from), it failed and gave me an error message for the line:
"with (field)"

I'll give things another go when I get the chance, but the Smarty template system makes things a little more confusing.

Theres a header page, a footer page, a template page and a PHP page. All needed to display and run the contact.php page which visitors see.

[Megrisoft]

Hello,

I will say that instead of directing to error page, you should use java validations for user input, you can see and find and nice code from dynamic drive website!

[random1739]

Originally Posted by Megrisoft

Hello,

I will say that instead of directing to error page, you should use java validations for user input, you can see and find and nice code from dynamic drive website!

Sorry for bumping an old thread, but I'm still in need of help.

Can you provide me with a link to the right stuff on the dynamic drive website, I can't seem to find the one you were referring to.

I was hoping for a simple 1 or 2 line addition to the PHP code in the page I have, but whatever is simplest.

I need to have the form NOT submit unless the user has entered a valid email address and telephone number