card/make/controller/deGroup.php

<?php
header("Content-type:text/html;charset=UTF-8");
include_once("../../untils/conn.php");

if (empty($_GET['group_id'])) {
  exit('<h1>连接数据库失败</h1>');
}
$group_id = $_GET['group_id'];

$query = mysqli_query($con, "delete from proxy_group where group_id = {$group_id}");

if (!$query) {
  echo ("<script>alert('删除失败');history.back();</script>");
} else {
  echo "<script>alert('删除信息成功');window.location.replace(document.referrer)</script> ";
}

?>