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code placement:

This is an example Login with encrypted password but don't forget to encrypt password and insert into database in sign up process.

// username and password sent from form
$myusername=$_POST['myusername'];
$mypassword=$_POST['mypassword'];

// encrypt password
$encrypted_mypassword=md5($mypassword);

$sql="SELECT * FROM $tbl_name WHERE username='$myusername' and password='$encrypted_mypassword'";
$result=mysql_query($sql);

 

what page should this code be inserted in?

in the login page like this?:

<html>
<head>
<title>
ESL Assembly.com
</title>
<?php
// username and password sent from form
$myusername=$_POST['myusername'];
$mypassword=$_POST['mypassword'];

// encrypt password
$encrypted_mypassword=md5($mypassword);

$sql="SELECT * FROM $tbl_name WHERE username='$myusername' and password='$encrypted_mypassword'";
$result=mysql_query($sql);
?>
</head>
<body>
<table width="300" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#CCCCCC">
<tr>
<form name="form1" method="post" action="checklogin.php">
<td>
<table width="100%" border="0" cellpadding="3" cellspacing="1" bgcolor="#FFFFFF">
<tr>
<td colspan="3"><strong>Member Login </strong></td>
</tr>
<tr>
<td width="78">Username</td>
<td width="6">:</td>
<td width="294"><input name="myusername" type="text" id="myusername"></td>
</tr>
<tr>
<td>Password</td>
<td>:</td>
<td><input name="mypassword" type="text" id="mypassword"></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td><input type="submit" name="Submit" value="Login"></td>
</tr>
</table>
</td>
</form>
</tr>
</table>
</body>
</html>

 

its from the following tutorial:

http://www.phpeasystep.com/workshopview.php?id=26

Link to comment
https://forums.phpfreaks.com/topic/122097-login-page/#findComment-630421
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