Connect(); $MySQL->SelectDB(); $query="SELECT count(*) as Cantidad FROM clientes WHERE RUT='$RUT';"; $result=mysql_query($query); $row=mysql_fetch_array($result); $Cantidad=intval($row["Cantidad"]); if ($Cantidad) { $valid="TRUE"; } else { $valid="FALSE"; } echo ""; echo ""; echo ""; echo "$valid"; echo ""; echo "" ; $MySQL->Close(); ?>