在else块中，您可以看到如何捕获MySQL错误并将其显示在警报中。
if(isset($_POST['btnSubmit'])) { $name = mysqli_real_escape_string($conn,$_POST["name"]); $sql = "INSERT INTO isodetail(title) VALUES ('{$name}')"; $run = mysqli_query($conn, $sql); if($run) { echo "<script>alert('Certi Added Successfully');window.open('isocerti.php','_self');</script>"; } else { $error = addslashes(mysqli_error($conn)); echo "<script>alert('An Error occur: {$error}');</script>"; }}
