[wp-hackers] Simple plugin help

[Toivo Lainevool]

I'm new to both PHP and WordPress, so please take it easy on me if this 
is a stupid mistake.

I'm trying to develop a plugin, but I am having problems getting even a 
simple one to work.  Here is my plugin test code:

<?php     
/*
Plugin Name: Test
*/
function test_it($text) {
    return preg_replace("/aaaa/", "a", $text);
}
add_filter('the_content', 'test_it');
?>

When I run it with an 'aaaa' string in my index.php file, nothing 
happens.  I know the plugin is being called, because if I put a syntax 
error into it, an error appears on the page.  I know plugins are working 
on my site because the Hello Dolly plugin works.

Any ideas what I'm doing wrong?

Thanks.

-- 

Toivo Lainevool
http://0blog.com