大家好！

我通过使用相同的hook add\\u操作（“delete\\u user”、“my\\u delete\\u user”）解决了此问题；

这是我的密码

<?php

function my_delete_user( $user_id ) {
    global $wpdb;
    $user_obj = get_userdata( $user_id );

    $id_user = $user_obj->ID;
    $idsss = $user_obj->user_id;


    /*Delete Data from friend table*/  
    $query_friend= $wpdb->query("DELETE FROM `wp_user_friends` where `friend_id` = ".$user_obj->ID."");

    /*delete data from group*/
    $delete_group_table =$wpdb->query("DELETE FROM `wp_group` where `user_id` = ".$user_obj->ID."");


}
add_action( \'delete_user\', \'my_delete_user\' );
?>