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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 |
|---|---|
| 704 | * @uses do_action() Calls 'comment_post' hook on $comment_ID returned from adding the comment and if the comment was approved. |
| 705 | * @uses wp_filter_comment() Used to filter comment before adding comment |
| 706 | * @uses wp_allow_comment() checks to see if comment is approved. |
| 707 | * @uses wp_insert_comment() Does the actual comment insertion to the database |
| 708 | * |
| 709 | * @param array $commentdata Contains information on the comment |
| 710 | * @return int The ID of the comment after adding. |
| 711 | */ |
| 712 | function wp_new_comment( $commentdata ) { |
| 713 | $commentdata = apply_filters('preprocess_comment', $commentdata); |
| 714 | |
| 715 | $commentdata['comment_post_ID'] = (int) $commentdata['comment_post_ID']; |
| 716 | $commentdata['user_ID'] = (int) $commentdata['user_ID']; |
| 717 | |
| 718 | $commentdata['comment_author_IP'] = preg_replace( '/[^0-9a-fA-F:., ]/', '',$_SERVER['REMOTE_ADDR'] ); |
| 719 | $commentdata['comment_agent'] = $_SERVER['HTTP_USER_AGENT']; |
| 720 | |
| 721 | $commentdata['comment_date'] = current_time('mysql'); |
| 722 | $commentdata['comment_date_gmt'] = current_time('mysql', 1); |