Also i tried creating customize alert box using html,css and javascript, but my problem is how can I call it in the echo function of PHP?
if (($con -> query($query) === TRUE) &&
($con -> query($query1) === TRUE) &&
($con -> query($query2) === TRUE) &&
($con -> query($query3) === TRUE))
{
echo "<script>alert('Employee Successfully Added')</script>";
}
like if the queries are correct, the customized alert box will pop up.