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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 |
|---|---|
| 285 | else |
| 286 | $link_rating = (int) $link_rating; |
| 287 | |
| 288 | if ( empty($link_image) ) |
| 289 | $link_image = ''; |
| 290 | $link_image = apply_filters('pre_link_image', $link_image); |
| 291 | |
| 292 | if ( empty($link_target) ) |
| 293 | $link_target = ''; |
| 294 | $link_target = apply_filters('pre_link_target', $link_target); |
| 295 | |
| 296 | if ( empty($link_visible) ) |
| 297 | $link_visible = 'Y'; |
| 298 | $link_visibile = preg_replace('/[^YNyn]/', '', $link_visible); |
| 299 | |
| 300 | if ( empty($link_owner) ) |
| 301 | $link_owner = $current_user->id; |
| 302 | else |
| 303 | $link_owner = (int) $link_owner; |