<?php
if(empty($_POST['userName'])||empty($_POST['userPsw'])||empty($_POST['userPsw2'])||empty($_POST['userMail'])){
exit("有必填项未填写,注册失败!");
}
if($_POST['userPsw']!==$_POST['userPsw2']){
exit("两次输入的密码不一致,注册失败");
}
$conn=mysql_connect("127.0.0.1","root","");
$db_selected=mysql_select_db("myblog",$conn);
$sql="INSERT INTO 'userinfo'('username','password','email')VALUES('".$_POST['userName']."','".$_POST['userPsw']."','".$_POST['userMail']."')";
$result=mysql_query($sql,$conn);
echo "恭喜您,注册成功!";
mysql_close();
?>
哪里有错?(这是少电中的“嘿,这是我的博客”的内容,解决有100赏金)