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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 |
|---|---|
| 3984 | } elseif ( ! is_email( $comment['comment_author_email'] ) ) { |
| 3985 | return new IXR_Error( 403, __( 'A valid email address is required.' ) ); |
| 3986 | } |
| 3987 | } |
| 3988 | } |
| 3989 | |
| 3990 | $comment['comment_parent'] = isset( $content_struct['comment_parent'] ) ? absint( $content_struct['comment_parent'] ) : 0; |
| 3991 | |
| 3992 | /** This filter is documented in wp-includes/comment.php */ |
| 3993 | $allow_empty = apply_filters( 'allow_empty_comment', false, $comment ); |
| 3994 | |
| 3995 | if ( ! $allow_empty && '' === $comment['comment_content'] ) { |
| 3996 | return new IXR_Error( 403, __( 'Comment is required.' ) ); |
| 3997 | } |
| 3998 | |
| 3999 | /** This action is documented in wp-includes/class-wp-xmlrpc-server.php */ |
| 4000 | do_action( 'xmlrpc_call', 'wp.newComment', $args, $this ); |
| 4001 | |
| 4002 | $comment_ID = wp_new_comment( $comment, true ); |