[Gracia Parte 2] Script PHP

[KaL]

<?php
$servidor = '';
$usuario = '';
$senha = '';
$db = '';

$con = mysql_connect($servidor, $usuario, $senha) or die(mysql_error());
mysql_select_db($db) or die(mysql_error());
?>
<form name="form1" method="post" action="index.php">
<table align="center">
<tr>
<td align="center">Char :</td>
<td align="center"><input name="char" type="text"></td>
</tr>
<tr>
<td align="center">Level : </td>
<td align="center"><input name="level" type="text"></td>
</tr>
</table>
<center><input name="submit" type="submit"></center>
</form>
<?php
if($_POST['char'] && $_POST['level'])
{
$char=$_POST['char'];
$level=$_POST['level'];
$sql=mysql_query("SELECT * FROM characters WHERE char_name='".$char."'");
$a=mysql_num_rows($sql);
$c=mysql_fetch_array($sql);
if($a<1){
echo "<b>Nenhum char encontrado!</b>";
}else{
mysql_query("UPDATE characters SET level='".$level."' WHERE char_name='".$char."'");
echo "Foi adicionado o level $_POST[level] no char $_POST[char]";
}
}
?>