How do you do this?

[mashiyoshi]

I hope all you experts can help me. What would be the simplest and best way to accomplish the following:

1. Select 1 random visitor to my site.
2. Redirect the selected visitor to a different page where they will fill out a form.

How would you approach this?

[twan]

It depends how many visitors you have, but you could send every 10th visitor to your form. Of course 10th could also be 100th, it depends how much visitors you have and when they all visit your site.

[Jmonk]

You could write a little php script that has an X% chance of sending the visitor to your form and a (100-X)% chance of sending to the expected destination.

[mashiyoshi]

That sounds like a good way to approach it. Do you know of a script that does what you just said?

[Jmonk]

Many skimming scripts work that way. Couple lines of php should do it. Just send out a http header that sends the visitor to your form when a 1-to-10 random number is below, say, 3. If it's equal or higher, you send the visitor to the url that he expects (which you sent along through http GET).

[Dynamix]

This would send a visitor to the form page 33% of the time (0-2 = 3 numbers, odds of hitting one number is 33%.. change 0,2 to 0,3 for 25%, 0,4 20%, etc.)

<?php
srand ((double) microtime( )*1000000);
$random_number = rand(0,2);
if ($random_number hahahaha 1) { header("Location: http://url-to-form/"); }
?>

[Dynamix]

that hahahaha should be two equals signs adjacent to one another (= = without the space)