Simple CAPTCHA Intergration required.

Need to add this Captcha :Securimage CAPTCHA

Added To, under the "Email" Text area

PAGE CODE:

<?php

include "config.php";

$detect=$_SERVER['PHP_SELF'];
$detect2=$_SERVER['SERVER_NAME'].$_SERVER['PHP_SELF'];

$detect3=explode("/",$detect2);
$count=count($detect3);

$ddd="";
for ($i=0;$i<$count-1;$i++){
	if ($i==0){
	$ddd=$detect3[$i];
}else{$ddd=$ddd."/".$detect3[$i];}
}
$detect3=$ddd."/";

$flag=0; $insert_flag=1;
if (isset($_POST['url']) and isset($_POST['category']) and isset($_POST['email'])){

$link = mysql_connect("$db_host", "$db_user", "$db_pass"); // host,username,password
mysql_select_db($db_name);
	$flag=1;
	$url=$_POST['url'];
	$category=$_POST['category'];
	$email=$_POST['email'];


			$query = "SELECT * FROM submission";
    			$result = mysql_query($query) or die("");
			$count=-1;
    			while ($line = mysql_fetch_row($result)){
     				$count++;
				$file[$count]=$line[0]; 
   			}
			
			$query = "SELECT * FROM approve";
    			$result = mysql_query($query) or die("");
			
    			while ($line = mysql_fetch_row($result)){
     				$count++;
				$file[$count]=$line[0]; 
   			}

$url_x=$url;
if (strstr($url,'http://')){
	$url_x=str_replace('http://','',$url);
}
if (strstr($url,'www.')){
	$url_x=str_replace('www.','',$url_x);
}

			
			for ($i=0;$i<=$count;$i++){
				//if ($url==$file[$i]){
				if (strstr($file[$i],$url_x)){

					$insert_flag=0; $flag=0; break;
				}
	
		}
if ($insert_flag!=0){
	$time=time();
	$query = "INSERT INTO `approve` (`url`, `category`, `email`, `time`) VALUES ('$url', '$category', '$email', '$time');";

	$result = mysql_query($query) or die("");

$headers  = "MIME-Version: 1.0
";
$headers .= "Content-type: text/html; charset=windows-1251
";
$headers .= "From: $email
";

$checklink=@file($url);
$checkcount=count($checklink);

$checkflag="No";
for ($i=0;$i<$checkcount;$i++){
	if (strstr($checklink[$i],"$detect3")){
		$checkflag="Yes"; break;
	}
}


$msg="Proxy URL: <a href=$url>$url</a><br>====================<br>
Category: $category<br>====================<br>
E-mail: <a href=mailto:$email>$email</a><br>====================<br>
Backlink: $checkflag<br>====================<br>
<br><br>

<a href='http://$detect3"."admin.php'>Go to admin area</a>

";

mail("$admin_email","New Proxy Site \"$url\" submitted", $msg, $headers);


$file=@file("subemail.txt");
$count=count($file);

$file_subject=@file("subemail_subject.txt");
$count_subject=count($file_subject);

$msg="";
for ($i=0;$i<$count;$i++){
	$msg.=$file[$i];
}

$headers  = "MIME-Version: 1.0
";
$headers .= "Content-type: text/html; charset=windows-1251
";
$headers .= "From: $admin_email
";

mail($email,$file_subject[0],$msg,$headers);





}
}
?>

<?php include "template/top.tpl"; ?>


    <b><font face="Verdana" size="2">Submit your Proxy Site! </b> </font>
     
    </div> 
   <div id="pageNav"> 
   <div id="sectionLinks" style='height: <?php include "config.php"; print ($links_num*24);?>px; overflow: auto; width: 100%'> 
   

<?php
$recent_num=19; // Number of recent categories
?>
    
<?php include "php/currently_active_proxies.php"; ?>

</div>
</div>
  <div id="content">
    <div class="feature">



<?php

if ($insert_flag==0){
echo <<<D
<b><br><br><font face=Verdana size=2>Proxy Already Listed
</b><br><br>
This proxy is already listed or pending to be listed.</font>

D;
}

if ($flag==1){



echo <<<D
<b><br><br>

<font face=Verdana size=2>Submission Received

</b><br><br>

 Thank you for your submission, it has been received.<br> Once approved, your listing should be live within 24 hours.<br><b> A link back is required for a guaranteed listing on our site. </b><br>Please use the following to link to our site:
<br><br>

<form method=get name=f onSubmit="return false;">
<input type=text name=l value='<a href="http://$detect3">Web Proxies</a>' size=40 onclick="document.f.l.focus();document.f.l.select();">
</form>

<br><br>

</font>

D;
}

?>
  




<table cellpadding=0 cellspacing=0 width=800><tr><td>
      <br>
     <font face="Verdana" size="2"> Get your proxy listed at Sneek.In, by meeting our requirements:
<br>
<br>
   1. <b>A backlink is required. If we dont see it, we wont accept you.</b><br><br>
   <span style="color:#CC0000;font-weight:normal;">&lt;a href=&quot;http://sneek.in/&quot;&gt;Web Proxies&lt;/a&gt;</span></li>
   <br>
   <br>
   2. Web Proxies only. We will <b>NOT</b> accept proxy listing sites!
   <br>
   3. Free domains will <b>NOT</b> be accepted!
   <br>


</a>
      <p>

<script language="JavaScript">
	function check(){
		if (document.form.url.value=='' || document.form.url.value=='http://' || document.form.email.value==''){
			alert('Please fill empty fields!'); return false;
		}
	}
</script>

<form method=post action="" name=form onSubmit="return check();">


<div id="sectionLinks"> 
  <strong><font face="Verdana" size="2">Website URL</strong></font><br>
  <br>
<input type=text name=url value='http://' style='width:250px'><br><br>

<strong><font face="Verdana" size="2">Category</strong></font><br>
<br>
<select name="category">

<?php
$cat_list=@file("categories.txt");
$count_cat=count($cat_list);

for ($i=0;$i<$count_cat;$i++){
echo <<<D
	<option value="$cat_list[$i]">$cat_list[$i]</option>
D;
}
?>

</select><br><br>

<strong><font face="Verdana" size="2">Email</strong></font><br>
<br>
<input type=text name=email style='width:250px'><br><br>

<input type=submit value='Submit'> 
</div> 
</form>
</td><td valign=middle width=100>

  
  <p>&nbsp;</p></td></tr></table>
     </p>

<?php include "template/bottom.tpl"; ?>

Code (markup):

 

Take a look at the captcha documentation, but usually add a condition before including your data form into the database.