Tak např tenhle :
<?php
$host = "IP"; //IP kde máte databázi
$port = "3306"; //Port (obvykle 3306)
$user = "root"; //MySQL pøihlašovací jméno
$pass = "heslo"; //Heslo do MySQL
$auth = "auth"; //Databáze s accountama
if(isset($_POST['submit']))
{
$account = $_POST['account'];
$passwordOld = $_POST['passwordOld'];
$passwordNew = $_POST['passwordNew'];
$passwordNew1 = $_POST['passwordNew1'];
$passwordolde = sha1(strtoupper($account) . ":" . strtoupper($passwordOld));
$passwordnewe = sha1(strtoupper($account) . ":" . strtoupper($passwordNew));
$passwordNew1e = sha1(strtoupper($account) . ":" . strtoupper($passwordNew1));
$account = /*mysql_real_escape_string*/($account);
$eoldpass = strtoupper($passwordolde);
$enewpass = strtoupper($passwordnewe);
$enewpass1 = strtoupper($passwordNew1e);
$con = mysql_connect("$host", "$user", "$pass") or die(mysql_error());
mysql_select_db("$auth", $con) or die(mysql_error());
$query = "SELECT id FROM account WHERE username = '".$account."' AND sha_pass_hash = '".$eoldpass."'";
$result = mysql_query($query) or die(mysql_error());
$numrows = mysql_num_rows($result);
if($enewpass != $enewpass1) { die("<p align='center'>Error:<br><br>New password fields must match!<br><br>Please go back and try again.</p>"); }
if(strlen($_POST['passwordNew']) < 5){
$chars = strlen($passwordNew);
die("<p align='center'>Error:<br><br>Your new password is too short!<br><br>You entered ".$chars." character(s).<br><br>The minimum length is 5 characters and the maximum length is 15.<br><br>Please go back and try again.</p>");
}
if($numrows == 0) { die("<p align='center'>Error:<br><br>Invalid account name/password!<br><br>Please go back and try again.</p>"); }
$query = "UPDATE account SET sha_pass_hash = '".$enewpass."' WHERE username = '".$account."'";
$result = mysql_query($query) or die(mysql_error());
echo "<p align='center'>Password for the Account<br><br>'<b>".$account."</b>'<br><br>has been successfully changed!";
//close mysql connection
mysql_close($con);
}
else{
?>
<html>
<head>
<title>Zmìna hesla</title>
<link href='style.css' rel="stylesheet">
</head>
<body>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<form autocomplete="off" method="post" action="<?php echo $_SERVER['PHP_SELF'] ?>">
Jméno accountu:<br><input type="text" name="account"><br><br>
Staré heslo:<br><input type="password" name="passwordOld"><br><br>
Nové heslo:<br><input type="password" name="passwordNew"><br><br>
Znovu nové heslo:<br><input type="password" name="passwordNew1"><br><br>
<input value="Zmìn heslo" class="form3" type="submit" name="submit">
</form>
<small>Mìl by jsi být offline pøi zmìnì hesla</small>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<small>Created by <a href="http://jackings.cz">Jackings</a></small>
</center>
</body>
</html>
<?php
}
?>