So I have a form that looks so.

<form action="thanks.php" method="post" class="niceform" name="myform">
<table>
<tr>
<td><label for="company_name">Company Name</label></td>
<td><input type="text" name="company" value="" size="38" /></td>
</tr>
// and so on

I have the validation by javascript. But the problem is that when I go directly to thanks.php from localhost/mysite/form/thanks.php I have an empty row that is inserted when I look at phpmyadmin. Thanks.php looks like so.

<?php
// open the connection
$conn = mysql_connect("localhost", "root", "password");
// pick the database to use
mysql_select_db("company_register",$conn);

$sql = "INSERT INTO `tblsignups` VALUES ('NULL', '$_POST[company]', '$_POST[email]', '$_POST[phone]', '$_POST[address]', '$_POST[comments]', '$_POST[contact_person]')";

$result = mysql_query($sql, $conn) or die(mysql_error());

mysql_close($conn);
?>
// And I have a thank you msg I display

How do I check that if some one should directly go to thanks.php I tell them to go fill the form first and do not put anything on the database

Originally asked by: Anele on Stack Overflow