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PIN (Personal Identification Number) Management System.


kizzie

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I really need some serious help with the design of a PIN (Personal Identification Number) Management System.

When a user (with ID) logs in with the PIN (which already exist in my database), i want the system to assign that PIN to that user (ID) alone. No other user (ID)  can access that PIN, the PIN is only assigned to that User (ID).

I need the PHP codes, MySQL database tables, and some lil' explanation.

 

Thanks.

A simple example.

 

<?php
session_start();
if (isset($_POST['pin'])) {
  $pin = mysql_real_escape_string($_POST['pin']);
  $sql = "SELECT id FROM users WHERE pin = '$pin'";
  if ($result = mysql_query($sql)) {
    if (mysql_num_rows($result)) {
      $_SESSION['pin'] = $_POST['pin'];
    }
  }
}

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