SQLSTATE [HY093]错误

Question

I am trying to run the following in PHP:

$stmt = $db_con->prepare("SELECT * FROM users WHERE email=:email");
$stmt->execute(array(":email"=>$user_email));
$count = $stmt->rowCount();

if($count==0){

$stmt = $db_con->prepare("INSERT INTO users(username,email,password,ip)VALUES(:uname, :email, :password, :ip)");
$stmt->bindParam(":username",$username);
$stmt->bindParam(":email",$useremail);
 $stmt->bindParam(":password",$hasheduserpassword);
$stmt->bindParam(":ip",$userip);

As a result, I get the following error:

SQLSTATE[HY093]: Invalid parameter number: parameter was not defined

Answer 1

In the query you are defining uname while setting a parameter called username try

$stmt = $db_con->prepare("INSERT INTO users(username,email,password,ip)VALUES(:username, :email, :password, :ip)");