I appreciate the help you can give about this issue
<html>
<body>
<B>GESTION DISTRIBUCION CSI</B>
<?php
$dbhost = 'localhost';
$dbuser = 'root';
$dbpass = 'franvalmo2008';
$conn = mysql_connect($dbhost, $dbuser, $dbpass);
$db_name="siaseg3"; // Database name
$tbl_name="csi"; // Table name
// Connect to server and select databse.
mysql_connect("$dbhost", "$dbuser", "$dbpass")or die("No puedo conectar");
mysql_select_db("$db_name")or die("No encuentro la base de datos");
if(! $conn )
{
die('No hubo conexion con base de datos' . mysql_error());
}
$username = $_SESSION['myusername'];
if(!isset($_SESSION['myusername']))
{
// header("location: update2.php");
}
else
{
$query="SELECT * FROM $tbl_name WHERE id=$id;
$result=mysql_query($query);
$num=mysql_numrows($result);
}
$letra=mysql_result($result, $i, "letra");
$resp=mysql_result($result, $i, "resp");
$backup1=mysql_result($result, $i, "backup1");
$backup2=mysql_result($result, $i, "backup2");
$sql = "UPDATE csi SET letra = '".$letra."', resp = '".$resp."', backup1 = '".$backup1."', backup2 = '".$backup2."' WHERE id = ".$id;
mysql_query($sql);
?>
<form id="frmCsiActualizar" name="frmCsiActualizar" method="post" action="update2.php" onsubmit="ActualizarDatos(); return false">
<p>
<label>Letra<br />
<input class="text" align="center" type="text" name="letra" id="letra" value="<?php echo $letra ?>" />
</label>
<p>
<label>Resp<br />
<input class="text" align="center" type="text" name="resp" id="resp" value="<?php echo $resp ?>" />
</label>
<p>
<label>Backup1<br />
<input class="text" align="center" type="text" name="backup1" id="backup1" value="<?php echo $backup1 ?>" />
</label>
<p>
<label>Backup2<br />
<input class="text" align="center" type="text" name="backup2" id="backup2" value="<?php echo $backup2 ?>" />
</label>
<p>
<input type="Submit" value="Actualizar">
<input type="Submit" value="Cancelar">
</p>
</body>
</html>