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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 |
|---|---|
| 264 | if ( '' != get_option('permalink_structure') ) { |
| 265 | $url = trailingslashit( get_permalink() ) . 'feed'; |
| 266 | if ( 'rss2' != $feed ) |
| 267 | $url .= "/$feed"; |
| 268 | $url = user_trailingslashit($url, 'single_feed'); |
| 269 | } else { |
| 270 | $url = get_option('home') . "/?feed=$feed&p=$id"; |
| 271 | } |
| 272 | |
| 273 | return apply_filters('post_comments_feed_link', $url); |
| 274 | } |
| 275 | |
| 276 | function edit_post_link($link = 'Edit This', $before = '', $after = '') { |
| 277 | global $post; |
| 278 | |
| 279 | if ( is_attachment() ) |
| 280 | return; |
| 281 | |
| 282 | if( $post->post_type == 'page' ) { |