Forms Image Verification
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<![CDATA[<!--
I am using a mysql database and also 16 or so images which display randomly. The images
are a 6-digit code which is displayed to the user. You can use variations of course by
making the digits longer or shorter, 25 digits, 3 digits, that is up to you.
You can use Microsoft Access applying the same principal - however you will need to change
your connection strings.
Database specs:
See the following line below:
mysql_connect("server", "database","password") or die(mysql_error());
> You will be substituting "server" with the server you are using such as localhost - or whatever
server you are using.
> Substitute "database" with the name of your database and "password" with your database password
For your database, you will need 3 fields:
> id - int(11) primary autoincrement
> url - varchar(255) - this field will be the complete url of your image
for example: http://bdchlibrary.com/codes/13.jpg
this is the url for just one of my code images
> code - varchar(10) - I place the actual characters from the image in this field
-->]]>
<![CDATA[
<html>
<head>
<meta http-equiv="Content-Language" content="en-us">
<title>Forms Image Verification</title>
<?php
// grab the security image and code from the database
$randCode=rand(1,16);
// see below: substitute server for your server such as localhost or whatever
// substitute database with the name of your database
// substitute password with your database password
//mysql_connect("server", "database","password") or die(mysql_error());
mysql_connect("server", "database","password") or die(mysql_error());
mysql_select_db("database") or die(mysql_error());
$result = mysql_query("SELECT id,url,code FROM codes WHERE id=".$randCode) or die(mysql_error());
while($row = mysql_fetch_array($result)) {
$id=$row['id'];
$url=$row['url'];
$dbcode=$row['code'];
}
// end grab
if ($_POST) {
$code=strtolower($_POST['code']);
$securityCode=strtolower($_POST['securityCode']);
if ($code<>$securityCode) {
$user_msg = "</b><br><font color=red>An error has occurred, please re-check and re-enter the security code</font>";
}
else {
$user_msg = "</b><br><font color=green>Congratulations, you have entered the correct code!</font>";
}
}
?>
</head>
<body>
<form method="post" action="FormsImageVerification.php">
<center><table border="1" id="table1">
<tr>
<td colspan="2">Enter the code shown below</td>
</tr>
<tr>
<td><img border="0" src="<?php echo $url; ?>"></td>
<td><input maxlength="6" type="text" name="securityCode"></td>
</tr>
<tr>
<td colspan="2">
<p align="center">
<input type="hidden" name="code" value="<?php echo $dbcode; ?>">
<input type="submit" value="Verify" name="verify"></td>
</tr>
</table>
<?php echo $user_msg; ?>
</center>
</form>
</body>
</html>
]]>