allow_empty_comment – Hook | Developer.WordPress.org

Filters whether an empty comment should be allowed.

Parameters

$allow_empty_commentbool

Whether to allow empty comments. Default false.

$commentdataarray

Array of comment data to be sent to wp_insert_comment() .

More Arguments from wp_insert_comment( … $commentdata )

Array of arguments for inserting a new comment.

comment_agent string
The HTTP user agent of the $comment_author when the comment was submitted. Default empty.
comment_approved int|string
Whether the comment has been approved. Default 1.
comment_author string
The name of the author of the comment. Default empty.
comment_author_email string
The email address of the $comment_author. Default empty.
comment_author_IP string
The IP address of the $comment_author. Default empty.
comment_author_url string
The URL address of the $comment_author. Default empty.
comment_content string
The content of the comment. Default empty.
comment_date string
The date the comment was submitted. To set the date manually, $comment_date_gmt must also be specified.
Default is the current time.
comment_date_gmt string
The date the comment was submitted in the GMT timezone.
Default is $comment_date in the site’s GMT timezone.
comment_karma int
The karma of the comment. Default 0.
comment_parent int
ID of this comment’s parent, if any. Default 0.
comment_post_ID int
ID of the post that relates to the comment, if any.
Default 0.
comment_type string
Comment type. Default 'comment'.
comment_meta array
Optional. Array of key/value pairs to be stored in commentmeta for the new comment.
user_id int
ID of the user who submitted the comment. Default 0.

$allow_empty_comment = apply_filters( 'allow_empty_comment', false, $commentdata );

Used by	Description
WP_REST_Comments_Controller::check_is_comment_content_allowed()`wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php`	If empty comments are not allowed, checks if the provided comment content is not empty.
wp_handle_comment_submission()`wp-includes/comment.php`	Handles the submission of a comment, usually posted to wp-comments-post.php via a comment form.
wp_xmlrpc_server::wp_newComment()`wp-includes/class-wp-xmlrpc-server.php`	Creates a new comment.

Version	Description
5.1.0	Introduced.