What is the code for stopping second subscription ?

[moneytree]

Hi,

 

May I know what is the code for stopping peoples from second subscribe to my opt-in for the same newsletter ?

 

The follwoing is my webform code for your review and advice :

 

<script language="javascript">

 

function verify()

{

var first = document.myform.realname.value;

var last = document.myform.lastname.value;

var email = document.myform.email.value;

 

var errors1 = "";

var errors2 = "";

var errors3 = "";

var message="Please complete the following field(s): \n";

 

if (first.length == "0") {

errors1="First name\n";

}

if (last.length == "0") {

errors2="Last name\n";

}

if (email.length == "0") {

errors3="email address\n";

}

if (errors1.length >= "1" || errors2.length >= "1" || errors3.length >= "1") {

alert(message + "\n\n" + errors1 + errors2 + errors3);

}

else {

document.myform.submit();

}

}

</script>

 

<div id="formbox">

<h3>Free E-book for today ! </h3>

<p>" SEO MADE EASY " (Worth $89)</p>

<center><img src="http://moneymakeyourich.com/images/seo_opt_made_easy_small.jpg"></center>

<form name="myform" METHOD="post" ACTION="http://moneymakeyourich.com/cgi-bin/formmail.pl">

<input type=hidden name="recipient" value="moneytree@moneymakeyourich.com">

<input type=hidden name="subject" value="Your Subject">

First Name :

<input type=text name="realname" size="20">

 

 

Last Name :

<input type=text name="lastname" size="20">

 

 

Email            :

<input type=text name="email" size="20">

 

 

<center><input type="button" value="Yes,I want it !" onclick="verify()"/></center>

 

</form>

 

Thank you.

 

Best regards

Manicui

     

 

[phpQuestioner]

DON'T DOUBLE POST!

 

 

http://www.phpfreaks.com/forums/index.php/topic,179223.0.html

 

 

You can also do something simple and disable the button onsubmit.

[moneytree]

Hi phpQuestioner,

 

I am sorry for it and thanks for your recommendation for the web site which I can learn the code.

 

Have a nice weekend.

 

Thank you.

 

Best regards

Manicui 

[phpQuestioner]

 

You have a good weekend too.

 

Good Luck with your adventure into server side language.