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login_check.php

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Jun 26th, 2019
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  1. <!--
  2. ************************************************
  3. * Developer : Edagr Rizkianata
  4. * Company : momnjo HO
  5. * Website : www.momnjo.com
  6. * E-mail : edgarrizki@gmail.com
  7. * Phone : +62-81-94-77777-94
  8. --------------------------------------------->
  9.  
  10. <?php
  11. // panggil file untuk koneksi ke database
  12. require_once "config/database.php";
  13.  
  14. // ambil data hasil submit dari form
  15. $username = mysqli_real_escape_string($mysqli, stripslashes(strip_tags(htmlspecialchars(trim($_POST['username'])))));
  16. $password = mysqli_real_escape_string($mysqli, stripslashes(strip_tags(htmlspecialchars(trim(md5($_POST['password']))))));
  17.  
  18. // pastikan username dan password adalah berupa huruf atau angka.
  19. if (!ctype_alnum($username) OR !ctype_alnum($password)) {
  20. header("Location: index.php?alert=1");
  21. }
  22.  
  23. else {
  24. // ambil data dari tabel admin untuk pengecekan berdasarkan inputan username dan passrword
  25. $query = mysqli_query($mysqli, "SELECT * FROM is_admin WHERE username='$username' AND password='$password'")
  26. or die('Ada kesalahan pada query admin : '.mysqli_error($mysqli));
  27. $rows = mysqli_num_rows($query);
  28.  
  29. // jika data ada, jalankan perintah untuk membuat session
  30. if ($rows > 0) {
  31. $data = mysqli_fetch_assoc($query);
  32.  
  33. session_start();
  34. $_SESSION['id_admin'] = $data['id_admin'];
  35. $_SESSION['username'] = $data['username'];
  36. $_SESSION['password'] = $data['password'];
  37. $_SESSION['nama_admin'] = $data['nama_admin'];
  38.  
  39. // lalu alihkan ke halaman admin
  40. header("Location: main.php?module=beranda");
  41. }
  42.  
  43. // jika data tidak ada, alihkan ke halaman login dan tampilkan pesan = 1
  44. else {
  45. header("Location: index.php?alert=1");
  46. }
  47. }
  48. ?>
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