$result = mysql_query('SELECT * FROM ....)

  $row = mysql_fetch_array($result);
  
  if ($row !='')
  
	  {
		  echo ('<form action="aendern3.php" method="post">');
		  echo ('<table cellspacing="0" cellpadding="0" border="0">');
		  
		  echo ('<tr>');
		  echo ('<td width="150" valign="top">Nummer:</td>');
		  echo ('<td width="300">');
		  echo ('<input type="text readonly" name="nr" size="3" maxlength="3" value="'.$row['nr'].'">');
		  echo ('</td>');
		  echo ('</tr>');
		  
		  echo ('<tr>');
		  echo ('<td width="150">Geschlecht:</td>');
		  	if ($row['allow_details'] = "m")
				{
		 		echo ('<td><input type="radio" name="sex" value="m" checked="checked">m&auml;nnlich');
		  		echo ('<input type="radio" name="sex" value="w">weiblich</td>');
		  		}
		  	else 
				{
				echo ('<td><input type="radio" name="sex" value="m">m&auml;nnlich');
		  		echo ('<input type="radio" name="sex" value="w" checked="checked">weiblich</td>');
		  		}
		  echo ('</tr>');
		  
		  echo ('<tr>');
		  echo ('<td width="150" valign="top">Name:</td>');
		  echo ('<td width="300">');
		  echo ('<input type="text readonly" name="name" size="40" value="'.$row['name'].'">');
		  echo ('</td>');
		  echo ('</tr>');

...}

if ($row['allow_details'] == "m")

if ($row['allow_details'] == "m")