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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 |
|---|---|
| 1330 | * @uses do_action() Calls 'comment_post' hook on $comment_ID returned from adding the comment and if the comment was approved. |
| 1331 | * @uses wp_filter_comment() Used to filter comment before adding comment. |
| 1332 | * @uses wp_allow_comment() checks to see if comment is approved. |
| 1333 | * @uses wp_insert_comment() Does the actual comment insertion to the database. |
| 1334 | * |
| 1335 | * @param array $commentdata Contains information on the comment. |
| 1336 | * @return int The ID of the comment after adding. |
| 1337 | */ |
| 1338 | function wp_new_comment( $commentdata ) { |
| 1339 | $commentdata = apply_filters('preprocess_comment', $commentdata); |
| 1340 | |
| 1341 | $commentdata['comment_post_ID'] = (int) $commentdata['comment_post_ID']; |
| 1342 | if ( isset($commentdata['user_ID']) ) |
| 1343 | $commentdata['user_id'] = $commentdata['user_ID'] = (int) $commentdata['user_ID']; |
| 1344 | elseif ( isset($commentdata['user_id']) ) |
| 1345 | $commentdata['user_id'] = (int) $commentdata['user_id']; |
| 1346 | |
| 1347 | $commentdata['comment_parent'] = isset($commentdata['comment_parent']) ? absint($commentdata['comment_parent']) : 0; |
| 1348 | $parent_status = ( 0 < $commentdata['comment_parent'] ) ? wp_get_comment_status($commentdata['comment_parent']) : ''; |