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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 389 | } |
| 390 | } |
| 391 | |
| 392 | function get_comment_author_url() { |
| 393 | global $comment; |
| 394 | return apply_filters('get_comment_author_url', $comment->comment_author_url); |
| 395 | } |
| 396 | |
| 397 | function comment_author_url() { |
| 398 | echo apply_filters('comment_url', get_comment_author_url()); |
| 399 | } |
| 400 | |
| 401 | function comment_author_email_link($linktext='', $before='', $after='') { |
| 402 | global $comment; |
| 403 | $email = apply_filters('comment_email', $comment->comment_author_email); |
| 404 | if ((!empty($email)) && ($email != '@')) { |
| 405 | $display = ($linktext != '') ? $linktext : $email; |
| 406 | echo $before; |
| 407 | echo "<a href='mailto:$email'>$display</a>"; |