WordPress用户时间周期限制发布文章数量

将以下代码放入WordPress主题的function.php文件中，并保存：

//设定每篇文章的发布间隔 
function force_time_between_posts($data, $postarr) {
 global $wpdb;
 if (empty($postarr['ID'])) return $data;  $latest = $wpdb->get_var("
 SELECT post_date
 FROM {$wpdb->posts} 
 WHERE post_status IN('future','publish') 
 AND post_type = 'post' 
 AND ID != {$postarr['ID']}
 ORDER BY post_date DESC
 LIMIT 1");
 $distance = 5; // 时间间隔（分钟）
 $latest = strtotime($latest);
 $current = strtotime($data['post_date']);
 if ($latest < $current) { $diff = $current - $latest; } else { $diff = 0; } if ($diff >= 0 && $diff < ($distance * 60)) {
return false;
 }else{
     return $data;
 }
}
add_action('wp_insert_post_data','force_time_between_posts',1,2);
//设定每篇文章的发布间隔 
function force_time_between_posts($data, $postarr) {
 global $wpdb;
 if (empty($postarr['ID'])) return $data;  $latest = $wpdb->get_var("
 SELECT post_date
 FROM {$wpdb->posts} 
 WHERE post_status IN('future','publish') 
 AND post_type = 'post' 
 AND ID != {$postarr['ID']}
 ORDER BY post_date DESC
 LIMIT 1");
 $distance = 5; // 时间间隔（分钟）
 $latest = strtotime($latest);
 $current = strtotime($data['post_date']);
 if ($latest < $current) { $diff = $current - $latest; } else { $diff = 0; } if ($diff >= 0 && $diff < ($distance * 60)) {
return false;
 }else{
     return $data;
 }
}
add_action('wp_insert_post_data','force_time_between_posts',1,2);
//设定每篇文章的发布间隔 
function force_time_between_posts($data, $postarr) {
 global $wpdb;
 if (empty($postarr['ID'])) return $data;  $latest = $wpdb->get_var("
 SELECT post_date
 FROM {$wpdb->posts} 
 WHERE post_status IN('future','publish') 
 AND post_type = 'post' 
 AND ID != {$postarr['ID']}
 ORDER BY post_date DESC
 LIMIT 1");
 $distance = 5; // 时间间隔（分钟）
 $latest = strtotime($latest);
 $current = strtotime($data['post_date']);
 if ($latest < $current) { $diff = $current - $latest; } else { $diff = 0; } if ($diff >= 0 && $diff < ($distance * 60)) {
return false;
 }else{
     return $data;
 }
}
add_action('wp_insert_post_data','force_time_between_posts',1,2);