jquery mobile form does not submit - php

Question

I would like to get some user data using a php form and store it in a mysql database , trouble is, the page simply refreshes when I submit the form.
Here is my php form:
<form id="companyform" name="companyform" method="post" action="index3.php" data-ajax="false">
<b>To enlist your business fill in the form below:</b>
<p>
<label for="name">Company Name:</label>
<input type="text" name="companyname" id="companyname" data-mini="true"/>
</p>
<p>
<label for="name">Company Address:</label>
<input type="text" name="companynaddress" id="companynaddress" data-mini="true"/>
</p>
<p>
<label for="textfield">Tel No.:</label>
<input type="text" name="tel" id="tel" data-mini="true"/>
</p>
<p>
<label for="textfield">Fax No.:</label>
<input type="text" name="fax" id="fax" data-mini="true"/>
</p>
<p>
<label for="textfield">Email:</label>
<input type="text" name="email" id="email" data-mini="true"/>
</p>
<p>
<label for="textfield">Website Address:</label>
<input type="text" name="website" id="website" data-mini="true"/>
</p>
<p>
<label for="textfield">Contact Person Name:</label>
<input type="text" name="contactname" id="contactname" data-mini="true"/>
</p>
<p>
<label for="textfield">Contact Person Number:</label>
<input type="text" name="contactnumber" id="contactnumber" data-mini="true"/>
</p>
<p>
<label for="textfield">Contact Person Email:</label>
<input type="text" name="contactemail" id="contactemail" data-mini="true"/>
</p>
<p>
<input name="submit" type="submit" id="submit" value="Submit" />
</p>
</form>
and here is my database connection code:
<?php
if (array_key_exists('submit', $_POST)) {
$con = mysql_connect("host", "user", "pass");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("botswanasearchdb", $con);
$companyname = $_POST['companyname'];
$companyaddress = $_POST['companyaddress'];
$tel = $_POST['tel'];
$fax = $_POST['fax'];
$emailid = $_POST['emailid'];
$website = $_POST['website'];
$contactname = $_POST['contactname'];
$contactnumber = $_POST['contactnumber'];
$contactemail = $_POST['contactemail'];
// prepare the SQL query
$sql = "INSERT INTO businessuser (companyname, companyaddress, tel, fax, emailid, website, contactname, contactnumber, contactemail) VALUES ('$companyname', '$companyaddress', '$tel', '$fax', '$emailid', '$website', '$contactname', '$contactnumber', '$contactemail')";
mysql_close($con);
}
?>

Answer 1

This is your form tag:
<form id="companyform" name="companyform" method="post" action="index3.php" data-ajax="false">
So you are submitting the form to index3.php (the action attribute). According to your comment index3.php contains your form and that is why the form refreshes when you submit it. You are basically reloading your form on form submit.
You need to submit the form to your php script that contains the php code you posted.
Edit: If everything is on the same page, you can do something like:
if (array_key_exists('submit', $_POST))
{
// your code
// show thank you message
}
else
{
// show form
}
Another edit: As you are using the deprecated mysql_* functions and not escaping the data, you have an sql injection whole and a ' character in your data will break your query. You should switch to PDO / mysqli and prepared statements. And always add error handling.