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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 |
|---|---|
| 1366 | * @uses do_action() Calls 'comment_post' hook on $comment_ID returned from adding the comment and if the comment was approved. |
| 1367 | * @uses wp_filter_comment() Used to filter comment before adding comment. |
| 1368 | * @uses wp_allow_comment() checks to see if comment is approved. |
| 1369 | * @uses wp_insert_comment() Does the actual comment insertion to the database. |
| 1370 | * |
| 1371 | * @param array $commentdata Contains information on the comment. |
| 1372 | * @return int The ID of the comment after adding. |
| 1373 | */ |
| 1374 | function wp_new_comment( $commentdata ) { |
| 1375 | $commentdata = apply_filters('preprocess_comment', $commentdata); |
| 1376 | |
| 1377 | $commentdata['comment_post_ID'] = (int) $commentdata['comment_post_ID']; |
| 1378 | if ( isset($commentdata['user_ID']) ) |
| 1379 | $commentdata['user_id'] = $commentdata['user_ID'] = (int) $commentdata['user_ID']; |
| 1380 | elseif ( isset($commentdata['user_id']) ) |
| 1381 | $commentdata['user_id'] = (int) $commentdata['user_id']; |
| 1382 | |
| 1383 | $commentdata['comment_parent'] = isset($commentdata['comment_parent']) ? absint($commentdata['comment_parent']) : 0; |
| 1384 | $parent_status = ( 0 < $commentdata['comment_parent'] ) ? wp_get_comment_status($commentdata['comment_parent']) : ''; |