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PHP ÄíÅ° ·Î±×ÀÎ ±¸Çö°ú °ÅÀÇ ºñ½ÁÇÏ´Ù. ¼¼¼ÇÀ¸·Î ±¸ÇöÇÒ ¶§ ´Ù¸¥ Á¡Àº ´ÙÀ½ 2°¡ÁöÀÌ´Ù.

  • ¼¼¼Ç º¯¼ö »ç¿ë Àü¿¡ session_start()¸¦ ½á¾ß ÇÑ´Ù.[1]
  • ·Î±×¾Æ¿ô½Ã ¼¼¼Ç Á¦°ÅÇÔ¼ö session_destory()¸¦ »ç¿ëÇÒ ¼ö ÀÖ´Ù.

ȸ¿øÁ¤º¸ Å×À̺íÀº ´ÙÀ½°ú °°´Ù. ´Ù¸¸ º»¹®¼­¿¡¼­´Â ¼¼¼Ç ±¸Çö¿¡ ÁýÁßÇϱâ À§ÇØ ÀǵµÀûÀ¸·Î DBºÎºÐÀ» Á¦¿ÜÇÏ°í °£´ÜÈ÷ ¹è¿­¿¡ ±â·ÏÇÏ¿´´Ù. (login_ok.php ÂüÁ¶)

ȸ¿øÁ¤º¸ Å×À̺í
member
m_id m_pw m_name
user1 pw1 Çѳð
user2 pw2 µÎ½Ã±â
user3 pw3 ¼®»ï

¿¹¸¦ µé¾î ¾ÆÀ̵ð user2, Æнº¿öµå pw2¸¦ ÀÔ·ÂÇÏ¸é µÎ½Ã±â »ç¿ëÀÚ·Î ·Î±×À뵃 °ÍÀÌ´Ù.

main.php

  • ·Î±×ÀÎµÈ »óŸé À̸§ Ãâ·Â
  • ·Î±×ÀÎ ¾ÈµÈ »óÅÂ¸é ·Î±×ÀÎ ÆäÀÌÁö(login.php)·Î À̵¿
<!DOCTYPE html>
<meta charset="utf-8" />
<?php
session_start();
if(!isset($_SESSION['user_id']) || !isset($_SESSION['user_name'])) {
	echo "<meta http-equiv='refresh' content='0;url=login.php'>";
	exit;
}
$user_id = $_SESSION['user_id'];
$user_name = $_SESSION['user_name'];
echo "<p>¾È³çÇϼ¼¿ä. $user_name($user_id)´Ô</p>";
echo "<p><a href='logout.php'>·Î±×¾Æ¿ô</a></p>";
?>

login.php

<!DOCTYPE html>
<meta charset="utf-8" />
<form method='post' action='login_ok.php'>
<table>
<tr>
	<td>¾ÆÀ̵ð</td>
	<td><input type='text' name='user_id' tabindex='1'/></td>
	<td rowspan='2'><input type='submit' tabindex='3' value='·Î±×ÀÎ' style='height:50px'/></td>
</tr>
<tr>
	<td>ºñ¹Ð¹øÈ£</td>
	<td><input type='password' name='user_pw' tabindex='2'/></td>
</tr>
</table>
</form>

login_ok.php

<?php
if(!isset($_POST['user_id']) || !isset($_POST['user_pw'])) exit;
$user_id = $_POST['user_id'];
$user_pw = $_POST['user_pw'];
$members = array('user1'=>array('pw'=>'pw1', 'name'=>'Çѳð'),
        'user2'=>array('pw'=>'pw2', 'name'=>'µÎ½Ã±â'),
        'user3'=>array('pw'=>'pw3', 'name'=>'¼®»ï'));
 
if(!isset($members[$user_id])) {
        echo "<script>alert('¾ÆÀ̵ð ¶Ç´Â Æнº¿öµå°¡ À߸øµÇ¾ú½À´Ï´Ù.');history.back();</script>";
        exit;
}
if($members[$user_id]['pw'] != $user_pw) {
        echo "<script>alert('¾ÆÀ̵ð ¶Ç´Â Æнº¿öµå°¡ À߸øµÇ¾ú½À´Ï´Ù.');history.back();</script>";
        exit;
}
session_start();
$_SESSION['user_id'] = $user_id;
$_SESSION['user_name'] = $members[$user_id]['name'];
?>
<meta http-equiv='refresh' content='0;url=main.php'>

logout.php

<?php
session_start();
session_destroy();
?>
<meta http-equiv='refresh' content='0;url=main.php'>
¡æ ÄíÅ°¿Í´Â ´Þ¸® ¼¼¼Ç Á¦°Å Àü¿ëÇÔ¼ö°¡ ÀÖ´Ù.

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