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$query=mysql_query("SELECT * FROM nutzer");
$zeileholen =  mysql_fetch_array($query,MYSQL_ASSOC);

while ($zeileholen =  mysql_fetch_array($query,MYSQL_ASSOC)) {
echo "

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if ($aktion=="edituser®name=$regname")
{	
	echo "du editierst $regname";} 

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if ($HTTP_GET_VARS['aktion'] == 'edituser'){

$query=mysql_query("SELECT * FROM nutzer WHERE regname='".addslashes(rawurldecode($HTTP_GET_VARS['regname']))."' LIMIT 1");

if(mysql_num_rows($query) == 0){
echo "Dieser User existiert nicht!";
exit;

} else {
$zeileholen =  mysql_fetch_array($query,MYSQL_ASSOC);

echo "du editierst " . $zeileholen['regname'];
}
}