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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 |
---|---|
1668 | */ |
1669 | function wp_new_comment( $commentdata ) { |
1670 | /** |
1671 | * Filter a comment's data before it is sanitized and inserted into the database. |
1672 | * |
1673 | * @since 1.5.0 |
1674 | * |
1675 | * @param array $commentdata Comment data. |
1676 | */ |
1677 | $commentdata = apply_filters( 'preprocess_comment', $commentdata ); |
1678 |
|
1679 | $commentdata['comment_post_ID'] = (int) $commentdata['comment_post_ID']; |
1680 | if ( isset($commentdata['user_ID']) ) |
1681 | $commentdata['user_id'] = $commentdata['user_ID'] = (int) $commentdata['user_ID']; |
1682 | elseif ( isset($commentdata['user_id']) ) |
1683 | $commentdata['user_id'] = (int) $commentdata['user_id']; |
1684 |
|
1685 | $commentdata['comment_parent'] = isset($commentdata['comment_parent']) ? absint($commentdata['comment_parent']) : 0; |
1686 | $parent_status = ( 0 < $commentdata['comment_parent'] ) ? wp_get_comment_status($commentdata['comment_parent']) : ''; |