<?php
    require_once 'conn.php';

    if(ISSET($_POST['remove'])){
        if(ISSET($_POST['mem_id'])){
            foreach($_POST['mem_id'] as $key => $value){
                mysqli_query($conn, "DELETE FROM `member` WHERE `mem_id` = '$value'") or die(mysqli_error());
            }

            header('location: index.php');
        }else{
            echo "<script>alert('Please select something first!')</script>";
            echo "<script>window.location= 'index.php'</script>";
        }
    }
?>