數(shù)據(jù)能接受到php文件中,但是就是不進(jìn)數(shù)據(jù)庫

<?php
header("Content-type:text/html;charset=utf-8");
//接收數(shù)據(jù)
$title = $_POST['title'];
$content = $_POST['content'];
$addtime = date("Y-m-d H:i:s");
echo $addtime;
//對(duì)數(shù)據(jù)進(jìn)行驗(yàn)證
if($title == ''|| $content == ''){
    //echo "標(biāo)題或內(nèi)容都不能為空!";
    echo "<script>alert('標(biāo)題或內(nèi)容都不能為空')
    window.location.href='add.php';</script>";
    exit;
}
//插入數(shù)據(jù)到數(shù)據(jù)庫
//1.連接數(shù)據(jù)庫
$conn = @mysql_connect('localhost','root','');
//2.選擇數(shù)據(jù)庫
mysql_select_db("mes");
//3.設(shè)置編碼
mysql_query("set names utf8");
//4.插入sql語句
$sql = "INSERT into mes_info values('','{$title}','{$content}','{$addtime}')";

//5.發(fā)送sql語句
$res = mysql_query($sql);
//判斷是否成功
if(!$res){
    echo"<script>
            alert('添加失敗');
            window.location.href='add.php';
        </script>";
}else{
    echo"<script>
            alert('添加成功');
            window.location.href='add.php';
        </script>";
}
?>

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