According to the codex.. this part:
urlencode($_SERVER['REQUEST_URI'])
.
is unneeded… if you just wan’t to logout (pasting from wordpress codex)
<a href="https://wordpress.stackexchange.com/questions/54970/<?php echo wp_logout_url(); ?>" title="Logout">Logout</a>
.
Logout and Redirect to Current Page
<a href="https://wordpress.stackexchange.com/questions/54970/<?php echo wp_logout_url( get_permalink() ); ?>" title="Logout">Logout</a>
.
Logout and Redirect to Homepage
<a href="https://wordpress.stackexchange.com/questions/54970/<?php echo wp_logout_url( home_url() ); ?>" title="Logout">Logout</a>
.
Hope this helps… should always check the codex first 😉
Have a gr8 day,
Sagive