proses

<?php

$connect = mysqli_connect("localhost", "root", "", "ajax");
	$nama = $connect->real_escape_string($_POST['nama']);
	$alamat = $connect->real_escape_string($_POST['asal']);
	$wali = $connect->real_escape_string($_POST['wali']);
	$asal = $connect->real_escape_string($_POST['asal']);
	$sql = $connect->query("SELECT id FROM siswa WHERE nama = '$nama'");
	if ($sql->num_rows > 0) {
		exit("Already Exists");
	}
	else
	{
		$connect->query("INSERT INTO siswa
				VALUES('','$nama','$alamat','$wali','$asal')");
			exit("Siswa Berhasil Ter Daftarkan");
	}


?>