habe da ein kleines problem mit meiner acc register page
hoffe mir kann da wer behilflich sein
ich selbst habe nicht wirklich viel ahnung in sachen php 
zur zeit sieht es so aus wenn ich einen acc erstelle schaut er in die db ob der username schon existiert
dieses möchte ich auch für die e-mail adresse machen
und das er durchsucht ob die ip schonmal benutzt wurde
also man soll maximal einmal die selbe e-mail benutzen können und maximal 2 mal die selbe ip
ist das möglich?
hoffe mir kann hier wer helfen
also meine sql datenbank sieht so aus
INSERT INTO accounts
(`acct`, `login`, `password`, `gm`, `banned`, `lastlogin`, `lastip`, `email`, `flags`)
VALUES
(18, 'test', 'test', '', 0, "9/29/2007 16:24:59", 'xx.xxx.xxx.xx', 'xxxx@xxxxxx.de', 8);
so und hier der php code für die page
<?php
#################
# #
# #
# Enjoy! #
# #
# #
#################include("config.php");
error_reporting(E_ALL ^ E_NOTICE);
session_start();
$msg = Array();
$error = Array();function addUser(){
if (empty($_POST)) return false;
global $config, $msg, $error;
if (empty($_POST['login'])) $error[] = 'Error, You forgot to enter a account name!';
if (empty($_POST['password'][0])empty($_POST['password'][1])) $error[] = 'Error, You forgot to enter a password!';
if ($_POST['password'][0] !== $_POST['password'][1]) $error[] = 'Password does not match!';
if (empty($_POST['email'])) $error[] = 'Please fill in a valid email adress!';
if (!empty($error)) return false;
$db = @mysql_connect($config['mysql_host'], $config['mysql_user'], $config['mysql_pass']);
if (!$db) return $error[] = 'Database: '.mysql_error();
if (!@mysql_select_db($config['mysql_dbname'], $db)) return $error[] = 'Database: '.mysql_error();
$query = "SELECT `acct` FROM `accounts` WHERE `login` = '".mysql_real_escape_string($_POST['login'])."'";
$res = mysql_query($query, $db);
if (!$res) return $error[] = 'Database: '.mysql_error();
if (mysql_num_rows($res) > 0) return $error[] = 'Username already in use.';
$query = "INSERT INTO `accounts` (`login`,`password`,`lastip`, `email`, `flags`) VALUES ('".mysql_real_escape_string($_POST['login'])."', '".mysql_real_escape_string($_POST['password'][0])."', '".$_SERVER['REMOTE_ADDR']."', '".mysql_real_escape_string($_POST['email'])."', '8')";
$res = mysql_query($query, $db);
if (!$res) return $error[] = 'Database: '.mysql_error();
$msg[] = 'The Account <span style="color:#00FF00">'.htmlentities($_POST['login']).'</span> has been created!';
$msg[] = 'In about 1-2 minutes you will be able to log in.';
$msg[] = 'In ca. 1-2 minuten kannst du dich einloggen.';
mysql_close($db);
return true;
}
{
addUser();
}?>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Account Creation Page</title>
<meta http-equiv="Pragma" content="no-cache"/>
<meta http-equiv="Cache-Control" content="no-cache"/>
<style type="text/css" media="screen">@import url(server_stats.css);</style>
<!--[if lt IE 7.]>
<script defer type="text/javascript" src="pngfix.js"></script>
<![endif]-->
</head>
<body>
<center>
<div class="logo"></div>
<div style="width:300px">
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="POST">
<table width="100%" border="0" cellspacing="1" cellpadding="3">
<tr class="head"><th colspan="2">Account Creation</th></tr>
<tr>
<th>Username: </th><td align="center"><input class="button" type="text" name="login" size="30" maxlength="16"/></td>
</tr>
<tr>
<th>Password: </th><td align="center"><input class="button" type="password" name="password[]" size="30" maxlength="16"/></td>
</tr>
<tr>
<th>Retype Password: </th><td align="center"><input class="button" type="password" name="password[]" size="30" maxlength="16"/></td>
</tr>
<tr>
<th>E-mail: </th><td align="center"><input class="button" type="text" name="email" size="30" maxlength="30"/></td>
</tr>
</table>
<input type="button" class="button" value="Back" onClick="history.go(-1)" />
<input type="submit" value="Create" class="button"/>
</form><?php
if (!empty($error)){
echo '<table width="100%" border="0" cellspacing="1" cellpadding="3"><tr><td class="error" align="center">';
foreach($error as $text)
echo $text.'</br>';
echo '</td></tr></table>';
};
if (!empty($msg)){
echo '<table width="100%" border="0" cellspacing="1" cellpadding="3"><tr><td align="center">';
foreach($msg as $text)
echo $text.'</br>';
echo '</td></tr></table>';
exit();
};
?></div>
<div class="footer">
Original design by mmorpg4free.com, styling by NoriaC
</div>
</center>
</body>
</html>
mfg Totatis
Ein Eintrag würd genügen oder es gibt sogar irgendein count...