mysql_query无法插入数据

Question

@ $n=$_REQUEST['uname'];   
if($n==null||$n=="")        //验证客户输入
{
	die('用户名不能为空');    
@ $p=$_REQUEST['upwd'];
if($p==null||$p=="")
{
	die( "请输入密码<br>");    
}
echo "<hr>";
echo "$n \ $p";
echo "<hr>";
echo "连接数据库<hr>";
$conn=mysqli_connect("127.0.0.1","root","root",3306);
$sql="INSERT INTO xz_user values('56','$n','$p','[e-mail]','1234567890','img/1.jpg','李三2','1');";
$result=mysqli_query($conn,$sql);
if($result===true)
{
	echo "yes<br>";
	$id=mysqli_insert_id($conn);
	echo "id=$id";
}else
{
	die("no <br>$sql");
}

Answer 1

查看MySQL服务启动正常没有。看一下php插入执行语句的报错。