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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 |
|---|---|
| 967 | * @uses do_action() Calls 'comment_post' hook on $comment_ID returned from adding the comment and if the comment was approved. |
| 968 | * @uses wp_filter_comment() Used to filter comment before adding comment. |
| 969 | * @uses wp_allow_comment() checks to see if comment is approved. |
| 970 | * @uses wp_insert_comment() Does the actual comment insertion to the database. |
| 971 | * |
| 972 | * @param array $commentdata Contains information on the comment. |
| 973 | * @return int The ID of the comment after adding. |
| 974 | */ |
| 975 | function wp_new_comment( $commentdata ) { |
| 976 | $commentdata = apply_filters('preprocess_comment', $commentdata); |
| 977 | |
| 978 | $commentdata['comment_post_ID'] = (int) $commentdata['comment_post_ID']; |
| 979 | $commentdata['user_ID'] = (int) $commentdata['user_ID']; |
| 980 | |
| 981 | $commentdata['comment_parent'] = absint($commentdata['comment_parent']); |
| 982 | $parent_status = ( 0 < $commentdata['comment_parent'] ) ? wp_get_comment_status($commentdata['comment_parent']) : ''; |
| 983 | $commentdata['comment_parent'] = ( 'approved' == $parent_status || 'unapproved' == $parent_status ) ? $commentdata['comment_parent'] : 0; |
| 984 | |
| 985 | $commentdata['comment_author_IP'] = preg_replace( '/[^0-9a-fA-F:., ]/', '',$_SERVER['REMOTE_ADDR'] ); |