Question

我在functions.php中有这段代码

global $current_user;
$userid = $current_user->ID;
$args = array(
    'post_type' => 'listings',
    'post_status' => 'publish',
    'author' => $userid
);
$the_posts = get_posts ( $args ); // get the published posts for that author
$post_count = count($the_posts); // count the number of published posts for the author
$N = 2; // set number for max posts per user
if ($post_count > $N) {
    if (current_user_is('s2member_level1')) {   


       // This is where I want to delete from wp_post where post_author = $userID


    }
}

我对SQL查询不够熟悉，无法弄清楚它为什么不起作用。我试过了

$wpdb = "DELETE FROM wp_posts WHERE post_author = $userID;"

和

$wpdb->query("DELETE FROM wp_posts WHERE post_author = $userID;");

全球$ wpdb;是在我的php文件中定义的

Answer 1

删除时应该没有*字符。

Answer 2

查询应该是这样的：

DELETE FROM table WHERE ....;

在你的情况下：

"DELETE FROM wp_posts WHERE post_author = $userID;"

Answer 3

您应该使用'

将值括起来

像这样：

$wpdb = "DELETE FROM wp_posts WHERE post_author = '$userID';"

Answer 4

尝试使用$ user_ID = get_current_user_id（）;全球$ current_user;之后。或者在声明$ current_user之后获取get_currentuserinfo（）;然后通过$ user_ID = $ current_user-＆gt; ID获取当前用户ID。有关获取当前用户登录信息的详细信息，请参阅http://codex.wordpress.org/Function_Reference/get_currentuserinfo

DELETE FROM wp_posts WHERE post_author = $ userID;

4 个答案: