How to check if user already exists in MySQL with PHP

Question

I am using following code which is not working for me.

$con=mysqli_connect(\"localhost\",\"root\",\"\",\"my_db\");
$check=\"SELECT COUNT(*) FROM persons WHER         


        

Answer 1

this code works fine for you...

$con=mysqli_connect("localhost","root","","my_db");
$check="SELECT * FROM persons WHERE Email = '$_POST[eMailTxt]'";
$rs = mysqli_query($con,$check);
$data = mysqli_fetch_array($rs, MYSQLI_NUM);
if($data[0] > 1) {
    echo "User Already in Exists
";
}

else
{
    $newUser="INSERT INTO persons(Email,FirstName,LastName,PassWord) values('$_POST[eMailTxt]','$_POST[NameTxt]','$_POST[LnameTxt]','$_POST[passWordTxt]')";
    if (mysqli_query($con,$newUser))
    {
        echo "You are now registered
";
    }
    else
    {
        echo "Error adding user in database
";
    }
}