wp_check_comment_flood()

检查是否发生了评论泛滥。

原型

wp_check_comment_flood( bool $is_flood, string $ip, string $email, string $date, bool $avoid_die = false )

描述

如果当前用户可以管理选项，则不会运行，因此不会阻止管理员。

参数

$is_flood (bool) (Required) 是否有评论泛滥？

$ip (string) (Required) 评论作者的IP地址。

$email (string) (Required) 评论作者的电子邮件地址。

$date (string) (Required) MySQL时间字符串。

$avoid_die (bool) (Optional) 如果为true，则不允许的注释将导致函数返回WP_Error对象，而不是执行wp_die（）。

返回值

(bool)  是否发生了评论泛滥。

源文件

路径：wp-includes/comment.php

<?php
...
function wp_check_comment_flood( $is_flood, $ip, $email, $date, $avoid_die = false ) {
	global $wpdb;
	// Another callback has declared a flood. Trust it.
	if ( true === $is_flood ) {
		return $is_flood;
	}
	// don't throttle admins or moderators
	if ( current_user_can( 'manage_options' ) || current_user_can( 'moderate_comments' ) ) {
		return false;
	}
	$hour_ago = gmdate( 'Y-m-d H:i:s', time() - HOUR_IN_SECONDS );
	if ( is_user_logged_in() ) {
		$user = get_current_user_id();
		$check_column = '`user_id`';
	} else {
		$user = $ip;
		$check_column = '`comment_author_IP`';
	}
	$sql = $wpdb->prepare(
		"SELECT `comment_date_gmt` FROM `$wpdb->comments` WHERE `comment_date_gmt` >= %s AND ( $check_column = %s OR `comment_author_email` = %s ) ORDER BY `comment_date_gmt` DESC LIMIT 1",
		$hour_ago,
		$user,
		$email
	);
	$lasttime = $wpdb->get_var( $sql );
	if ( $lasttime ) {
		$time_lastcomment = mysql2date('U', $lasttime, false);
		$time_newcomment  = mysql2date('U', $date, false);
		/**
		 * Filters the comment flood status.
		 *
		 * @since 2.1.0
		 *
		 * @param bool $bool             Whether a comment flood is occurring. Default false.
		 * @param int  $time_lastcomment Timestamp of when the last comment was posted.
		 * @param int  $time_newcomment  Timestamp of when the new comment was posted.
		 */
		$flood_die = apply_filters( 'comment_flood_filter', false, $time_lastcomment, $time_newcomment );
		if ( $flood_die ) {
			/**
			 * Fires before the comment flood message is triggered.
			 *
			 * @since 1.5.0
			 *
			 * @param int $time_lastcomment Timestamp of when the last comment was posted.
			 * @param int $time_newcomment  Timestamp of when the new comment was posted.
			 */
			do_action( 'comment_flood_trigger', $time_lastcomment, $time_newcomment );
			if ( true === $avoid_die ) {
				return true;
			} else {
				if ( wp_doing_ajax() ) {
					die( __('You are posting comments too quickly. Slow down.') );
				}
				wp_die( __( 'You are posting comments too quickly. Slow down.' ), 429 );
			}
		}
	}
	return false;
}
...
?>

其他

英文文档：https://developer.wordpress.org/reference/functions/wp_check_comment_flood/