Why is this htaccess file causing a 500 error in Apache?

Why is my htaccess file causing a 500 erro开发者_运维技巧r?

I am trying to get it so when anyone enters http://www.example.com/24 it will run the script for the 'key' 24 but the server reads http://www.example.com/?key=24.

Php script on index.php:

<?php include("scripts/config.php");
include("scripts/facebook.php");

if(isset($_GET['key'])){

$like_id=mysql_real_escape_string($_GET['key']);

include_once 'like/index.php';

}else{

include_once 'home.php';


}
?>

htaccess code:

RewriteEngine On

RewriteRule ^([a-zA-Z0-9_-]+)/\index$ index.php?key=$1

RewriteRule ^([a-zA-Z0-9_-]+)/\index$ index.php?key=$1

Also could it be where i'm saving my htaccess file? currently its in the htdocs folder.

Try this:

RewriteEngine On
RewriteRule ^([a-zA-Z0-9_-]+)$ index.php?key=$1

In any case, your current rules should not trigger a 500 status code unless mod_rewrite is not enabled.

Edit: I've just noticed that you spell it htaccess all around the question. The correct name is .htaccess (note the leading dot).

Error in your slashes

RewriteEngine On  
RewriteRule ^([a-zA-Z0-9_-]+)\/index$ index.php?key=$1  
RewriteRule ^([a-zA-Z0-9_-]+)\/index$ index.php?key=$1 

It might be looping through the rules over and over. Always add [L] unless you want the rules to be processed further.

Also, as point out by Alvaro, you don't need the / index part:

RewriteRule ^([a-zA-Z0-9_-]+)/?$ index.php?key=$1 [L]