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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 |
|---|---|
| 154 | if ( '' == $author_nicename ) { |
| 155 | $user = get_userdata($author_id); |
| 156 | if ( !empty($user->user_nicename) ) |
| 157 | $author_nicename = $user->user_nicename; |
| 158 | } |
| 159 | $link = str_replace('%author%', $author_nicename, $link); |
| 160 | $link = get_option('home') . trailingslashit($link); |
| 161 | } |
| 162 | |
| 163 | $link = apply_filters('author_link', $link, $author_id, $author_nicename); |
| 164 | |
| 165 | return $link; |
| 166 | } |
| 167 | |
| 168 | // Get author's preferred display name |
| 169 | function get_author_name( $auth_id ) { |
| 170 | $authordata = get_userdata( $auth_id ); |
| 171 | |
| 172 | return $authordata->display_name; |