This is simple form authentication by a random number generated by PHP and authenticated by javascript. It can be used for spam control.
~~~ Head Section Code ~~~
PHP Code
<?php $mynumber= rand(673,62389); echo $mynumber; ?> |
Javascript Code
<script type="text/javascript"> //defining variable and storinging in script var randomnumber= <?= $mynumber?>; // Validating function CheckData() { with(document.mail) { if(q.value != randomnumber) { alert("Please Enter Correct Number"); q.focus(); return false; } } return true; } </script> |
~~~ Body Section Code ~~~
Form Code
<form name="mail" action="go.php" method="post" onsubmit="return CheckData()"> <input type="text" name="q"> <input type="submit" name="Submit" value="Submit"> </form> |
Random Number Verification PHP Script Download
Random Number Verification – Simple Form Authentication Using PHP is a post from: PHP Magic Book - Free PHP Scripts, Tutorials and Downloads