wp_new_comment( array $commentdata, bool $avoid_die = false )

向数据库添加新注释。
Adds a new comment to the database.

说明（Description）

过滤新的注释，以确保在将注释插入数据库之前，字段已被清理并有效。使用评论ID和评论是否被WordPress批准来调用“comment_post”操作。还有“preprocess_comment”过滤器，用于在函数处理注释数据之前对其进行处理。我们在这里直接使用远程地址。如果您在代理后面，您应该确保它设置正确，例如在wp中-配置.php，为您的环境。看到了吗https://core.trac.wordpress.org/ticket/9235另请参阅wp_insert_comment（）

源码（Source）

/**
 * Adds a new comment to the database.
 *
 * Filters new comment to ensure that the fields are sanitized and valid before
 * inserting comment into database. Calls 'comment_post' action with comment ID
 * and whether comment is approved by WordPress. Also has 'preprocess_comment'
 * filter for processing the comment data before the function handles it.
 *
 * We use REMOTE_ADDR here directly. If you are behind a proxy, you should ensure
 * that it is properly set, such as in wp-config.php, for your environment.
 * See {@link https://core.trac.wordpress.org/ticket/9235}
 *
 * @since 1.5.0
 * @since 4.3.0 'comment_agent' and 'comment_author_IP' can be set via `$commentdata`.
 *
 * @see wp_insert_comment()
 *
 * @global wpdb $wpdb
 *
 * @param array $commentdata Contains information on the comment. See wp_insert_comment()
 *                           for information on accepted arguments.
 * @return int|false The ID of the comment on success, false on failure.
 */
function wp_new_comment( $commentdata ) {
	global $wpdb;

	if ( isset( $commentdata['user_ID'] ) ) {
		$commentdata['user_id'] = $commentdata['user_ID'] = (int) $commentdata['user_ID'];
	}

	$prefiltered_user_id = ( isset( $commentdata['user_id'] ) ) ? (int) $commentdata['user_id'] : 0;

	/**
	 * Filter a comment's data before it is sanitized and inserted into the database.
	 *
	 * @since 1.5.0
	 *
	 * @param array $commentdata Comment data.
	 */
	$commentdata = apply_filters( 'preprocess_comment', $commentdata );

	$commentdata['comment_post_ID'] = (int) $commentdata['comment_post_ID'];
	if ( isset( $commentdata['user_ID'] ) && $prefiltered_user_id !== (int) $commentdata['user_ID'] ) {
		$commentdata['user_id'] = $commentdata['user_ID'] = (int) $commentdata['user_ID'];
	} elseif ( isset( $commentdata['user_id'] ) ) {
		$commentdata['user_id'] = (int) $commentdata['user_id'];
	}

	$commentdata['comment_parent'] = isset($commentdata['comment_parent']) ? absint($commentdata['comment_parent']) : 0;
	$parent_status = ( 0 < $commentdata['comment_parent']="" )="" wp_get_comment_status($commentdata['comment_parent'])="" :="" '';="" $commentdata['comment_parent']="(" 'approved'="=" $parent_status="" ||="" 'unapproved'="=" $parent_status="" )="" $commentdata['comment_parent']="" :="" 0;="" if="" (="" !="" isset(="" $commentdata['comment_author_ip']="" )="" )="" {="" $commentdata['comment_author_ip']="$_SERVER['REMOTE_ADDR'];" }="" $commentdata['comment_author_ip']="preg_replace(" '/[^0-9a-fa-f:.,="" ]/',="" '',="" $commentdata['comment_author_ip']="" );="" if="" (="" !="" isset(="" $commentdata['comment_agent']="" )="" )="" {="" $commentdata['comment_agent']="isset(" $_server['http_user_agent']="" )="" $_server['http_user_agent']:="" '';="" }="" $commentdata['comment_agent']="substr(" $commentdata['comment_agent'],="" 0,="" 254="" );="" if="" (="" empty(="" $commentdata['comment_date']="" )="" )="" {="" $commentdata['comment_date']="current_time('mysql');" }="" if="" (="" empty(="" $commentdata['comment_date_gmt']="" )="" )="" {="" $commentdata['comment_date_gmt']="current_time(" 'mysql',="" 1="" );="" }="" $commentdata="wp_filter_comment($commentdata);" $commentdata['comment_approved']="wp_allow_comment($commentdata);" $comment_id="wp_insert_comment($commentdata);" if="" (="" !="" $comment_id="" )="" {="" $fields="array(" 'comment_author',="" 'comment_author_email',="" 'comment_author_url',="" 'comment_content'="" );="" foreach(="" $fields="" as="" $field="" )="" {="" if="" (="" isset(="" $commentdata[="" $field="" ]="" )="" )="" {="" $commentdata[="" $field="" ]="$wpdb-">strip_invalid_text_for_column( $wpdb->comments, $field, $commentdata[ $field ] );
			}
		}

		$commentdata = wp_filter_comment( $commentdata );

		$commentdata['comment_approved'] = wp_allow_comment( $commentdata );

		$comment_ID = wp_insert_comment( $commentdata );
		if ( ! $comment_ID ) {
			return false;
		}
	}

	/**
	 * Fires immediately after a comment is inserted into the database.
	 *
	 * @since 1.2.0
	 *
	 * @param int $comment_ID       The comment ID.
	 * @param int $comment_approved 1 (true) if the comment is approved, 0 (false) if not.
	 */
	do_action( 'comment_post', $comment_ID, $commentdata['comment_approved'] );

	if ( 'spam' !== $commentdata['comment_approved'] ) { // If it's spam save it silently for later crunching
		if ( '0' == $commentdata['comment_approved'] ) {
			wp_notify_moderator( $comment_ID );
		}

		// wp_notify_postauthor() checks if notifying the author of their own comment.
		// By default, it won't, but filters can override this.
		if ( get_option( 'comments_notify' ) && $commentdata['comment_approved'] ) {
			wp_notify_postauthor( $comment_ID );
		}
	}

	return $comment_ID;
}

笔记（Notes）