PHP Error

I cant process above PHP file. It doesnt even gives me any error.

Can you guide where is the Issue ?

 

<?php

$where_form_is="http://".$_SERVER['SERVER_NAME'].strrev(strstr(strrev($_SERVER['PHP_SELF']),"/"));

// Checkbox handling
$field_8_opts = $_POST['field_8'][0].",". $_POST['field_8'][1].",". $_POST['field_8'][2].",". $_POST['field_8'][3].",". $_POST['field_8'][4].",". $_POST['field_8'][5].",". $_POST['field_8'][6];

$field_9_opts = $_POST['field_9'][1].",". $_POST['field_9'][2];

mail("email@email.comt","Online Enquiry","Form data:

Name: " . $_POST['field_1'] . "
Company Name: " . $_POST['field_2'] . "
Email ID: " . $_POST['field_4'] . "
Phone Number: " . $_POST['field_3'] . "
Website URL: " . $_POST['field_5'] . "
Entity Type: " . $_POST['field_6'] . "
Message: " . $_POST['field_7'] . "
Dialing Method: " . $field_9_opts . "
VOIP Reqd: " . $field_8_opts

); // There. There was a double quote.

include("confirm.html");

?> 

PHP:

 

Thanks a Lot.

It worked.