Form submitting in Chrome but not the other browsers

[vuvuadi]

Hi.
I'm having a problem submitting a form with this code:

PHP

<?php session_start() ?>
<?php
$to = 'you@example.com';
$subject = 'Subject';
$headers  = 'MIME-Version: 1.0' . "\r\n";
$headers .= 'Content-type: text/plain; charset=iso-8859-1' . "\r\n";
$headers .= 'From: Me' . "\r\n";
$response = null;
define('EMAIL_PATTERN', '/^[\w\.-]{1,}\@([\da-zA-Z-]{1,}\.){1,}[\da-zA-Z-]+$/');
define('EMAIL_LENGTH', 200);



if (isset($_POST['submit'])) {
	
	// check all required fields
	if (!empty($_POST['firstname']) &&
		!empty($_POST['email']) &&
		!empty($_POST['contact']) &&
		!empty($_POST['organization']) && 
		!empty($_POST['website'])){
		
		// escape all inputs
		$firstname = escape($_POST['firstname']);
		$email = escape($_POST['email']);
		$contact = escape($_POST['contact']);
		$organization = escape($_POST['organization']);
		$website = escape($_POST['website']);
				
		// sanitize the prospect e-mail address
		if (sanitize($email, EMAIL_PATTERN, EMAIL_LENGTH)) {
			// send mail to prospect and clayant
			$sentmail = mail($to, $subject, 'Name: ' . $firstname . "\n\n" . "Email: " . $email . "\n\n" . "Contact Number: " . $contact . "\n\n" . "Organization: " . $organization . "\n\n" . "Website: " . $website, $headers);

				header('location: thanks.php');

		} else {
			// bail
			$response = 'Please check your e-mail address again.';
		}
		
	} else {
		// bail
		$response = 'Please enter all required fields marked with an asterisk (*).';
	}
}


function escape($string) {
	return (!empty($string)) ? strip_tags(trim($string)) : null;
}

function sanitize($string, $pattern, $length) {
	if (strlen($string) <= $length) {
		if (preg_match($pattern, $string)) {
			return true;
		}
	}
	return false;
}

function get_post($value) {
	echo (@!empty($_POST[$value])) ? trim($_POST[$value]) : null;
}

?>

and HTML

<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post" class="form" name="form" >
				<?php
						if (!empty($response)) {
							echo '<p class="error">' . $response . '</p>' . "\n";
							}
				?>
				<label for="firstname">Your first name *</label>
				<input type="text" name="firstname" id="firstname" value="<?php get_post('firstname'); ?>" />
				<label for="email">Your Email Address *</label>
				<input type="text" name="email" id="email" value="<?php get_post('email'); ?>" />
				<label for="contact">Contact number *</label>
				<input type="text" name="contact" id="contact" value="<?php get_post('contact'); ?>" />
				<label for="organization">Organization *</label>
				<input type="text" name="organization" id="organization" value="<?php get_post('organization'); ?>" />
				<label for="website">Website *</label>
				<input type="text" name="website" id="website" value="<?php get_post('website'); ?>" />
				<input type="image" name="submit" id="submit" alt="submit" src="images/submit-btn.png" width="280" height="60" class="submit-btn" />
			</form>

It just refreshes the page in FF and IE but redirects to the thank you page and sends me an email in chrome

[WolfShade]

Well, for one thing don't name the form "form", or the class. form is a reserved word. Name the form "emailForm" or something.

[jmj001]

You probably need an actual submit button... not just an image of one..

try just putting in a standard old submit button and see if that works

change

PHP Code:

<input type="image" name="submit" id="submit" alt="submit" src="images/submit-btn.png" width="280" height="60" class="submit-btn"  /> 


to

PHP Code:

<input type="submit" name="submit" id="submit" alt="submit" src="images/submit-btn.png" width="280" height="60" class="submit-btn"  /> 


[tangoforce]

Originally Posted by vuvuadi

if (isset($_POST['submit'])) {

I really cannot stress enough how much of a bad idea that is. Please see my signature, the link and the video for details why.

[Fou-Lu]

^
Not to mention that image submits do not contain just the name. They contain the name_x and name_y attributes. Check the fields in use instead, this way you don't need to concern yourself with if it was submitted from an image input or a submit input.
Lets see if I can find this in the docs. Yeah, check this link for more information: http://ca3.php.net/manual/en/faq.htm...tml.form-image
The actual explanation is now incorrect. Since register globals are gone as of 5.4, there is no reason that $_GET/$_POST['submit.x'] will not work. This is a limitation of the possible use of register globals, but I somehow doubt that the functionality will be reverted.