oop

// controller.php

<?php
include_once 'model.php';

$db = new Connections();
$db->OpenConnection();

function save_data() {
    $nama = $_POST['nama'];
    $email = $_POST['email'];
    $telp = $_POST['telp'];
    $username = $_POST['username'];
    $password = md5( $_POST['password'] );

    if ( empty( $nama ) || empty( $email ) || empty( $telp ) || empty( $username ) || empty( $password ) ) {
        echo "<script>alert( 'Data tidak boleh kosong !' ); window.location.href='./';</script>";
    } else {
        $insert = new DataDiri(); // instansiasi
        $insert->insert_data( $nama, $email, $telp, $username, $password );

        echo "<script>alert( 'Data berhasil disimpan !' ); window.location.href='./';</script>";
    }

}



//model.php
<?php

class Connections {
    private $conn;
    private $db_host = 'localhost';
    private $db_user = 'root';
    private $db_pswd = '';
    private $db_name = 'lat_crud';

    function OpenConnection() {
        $this->conn = mysql_connect( $this->db_host, $this->db_user, $this->db_pswd ) or die ( "". mysql_error() );
        if ( $this->conn ) {
            mysql_select_db( $this->db_name );
        } else {
            die( "Connection problem !". mysql_error() );
        }
    }
} // END: Class Connections


class DataDiri {
    function insert_data( $nama, $email, $telp, $username, $password ) {
        $sql = "INSERT INTO data_diri( nama, email, telp, username, password )
                VALUES ( '$nama', '$email', '$telp', '$username', '$password' )";

        $query = mysql_query( $sql );
        return $query;
    }

    function display_data() {
        $sql = mysql_query( "SELECT * FROM data_diri" );
        while ( $row = mysql_fetch_array( $sql ) ) {
            $data[] = $row;
             return $data;
        }
    }
} // END: Class DataDiri



//index.php
<form action="controller.php" method="post">
    <table>
        <tr>
            <td></td>
            <td></td>
            <td><input type="text" name="nama" placeholder="Nama"></td>
        </tr>
        <tr>
            <td></td>
            <td></td>
            <td><input type="email" name="email" placeholder="Email"></td>
        </tr>
        <tr>
            <td></td>
            <td></td>
            <td><input type="text" name="telp" placeholder="No Telp"></td>
        </tr>
        <tr>
            <td></td>
            <td></td>
            <td><input type="text" name="username" placeholder="Username"></td>
        </tr>
        <tr>
            <td></td>
            <td></td>
            <td><input type="password" name="password" placeholder="Password"></td>
        </tr>
        <tr>
            <td></td>
            <td></td>
            <td><input type="submit" name="submit-btn"></td>
        </tr>
    </table>
</form>