下面是我的部分代碼：

function fetchOne($sql,$result_type=MYSQLI_ASSOC){//ASSOC返回關聯詞組
??? $link=mysqli_connect(DB_HOST,DB_USER,DB_PWD) or die("數據庫鏈接失敗Error:".mysqli_errno().":".mysqli_errno());
??? mysqli_set_charset($link,DB_CHARSET);
??? mysqli_select_db($link,DB_DBNAME) or die("指定數據庫打開失敗");
??? $result=mysqli_query($link,$sql);
??? if (!$result) {
??????? //return bace;
??????? printf("Error: %s\n", mysqli_error($link));
??????? exit();
??? }
??? $row=mysqli_fetch_array($result,$result_type);
??? return $row;
}

<?php
require_once '../include.php';
$username=$_POST['username'];
$password=$_POST['password'];
//$password=md5($_POST['password']);
$verify=$_POST['verify'];
$verify1=$_SESSION['verify'];
//$autoFlag=$_POST['autoFlag'];
if($verify==$verify1){
??? $sql="select * from MFY_admin where username='{$username}' and password='{$password}'";
??? /* $row=checkAdmin($sql);
??? var_dump($row); */
??? $res = checkAdmin($sql);
??? var_dump($res);
?? // if($row){
??????? //如果選了一周內自動登陸
??????? /* if($autoFlag){
??????????? setcookie("adminId",$row['id'],time()+7*24*3600);
??????????? setcookie("adminName",$row["username"],time()+7*24*3600);
??????? } */
????? /*?? $_SESSION['adminName']=$row['username'];
?? ??? ?$_SESSION['adminId']=$row['id'];
???????? alertMes("登陸成功", "index.php");
??? }else{
??????? alertMes("登陸失敗，重新登陸", "login.php");

??? } */
}else{
??? alertMes("驗證碼錯誤，重新登陸", "login.php");
}