I’m using comment_reply_link, for the reply links on every comment, but I want to use an image instead of text. I only need the link of the comment reply, not the whole thing. Codex wasn’t helpful, neither the WP forums.
<span class="reply">
<a href="<?php //comment reply link here ?>">
<img src="<?php bloginfo('template_url') ?>/css/images/reply-button.png" alt="" />
</a>
</span>
If you just need to replace the link text, add the image code as an argument:
Otherwise see the source code for the way the URL is generated.