Variable vacia

[jorgecultid]

$sql = "INSERT INTO fng.tblfacturacion VALUES(";
$sql .= "'".$periodo."',"; // fvcperiodo
$sql .= "(SELECT finidreserva FROM fng.tblreservacupo WHERE fvcgarantia = '". str_pad($fileRow[2], 10, "0", STR_PAD_LEFT)."'),"; // finidreserva
$sql .= "'".$fileRow[0]."',"; // fvcproyecto
$sql .= "'".$fileRow[1]."',"; // fvcposicion
$sql .= "'A',"; // fchverificacion
$sql .= "'". str_pad($fileRow[2], 10, "0", STR_PAD_LEFT). "',"; // fvcgarantia
$sql .= str_replace(",", "", $fileRow[10]) .","; // fmobasecalculo
$sql .= str_replace(",", "", $fileRow[12]) .","; // fflporcentaje
$sql .= str_replace(",", "", $fileRow[13]) .","; // fmovalorcomision
$sql .= str_replace(",", "", $fileRow[14]) .","; // fmovaloriva
$sql .= str_replace(",", "", $fileRow[15]) .","; // fmovalortotal
$sql .= "'".$_SESSION['susuario']."',"; // fvcusuario
$sql .= "NOW(),"; // fdtfechaingreso
$sql .= "'".$estado."',"; // fchestado
$sql .= "NULL,";
$sql .= "NULL,";
$sql .= "NULL,";
$sql .= "NULL,";
$sql .= str_replace(",", "", $fmovalorcredito) .","; ; //Valor credito en registro de garantia
$sql .= str_replace(",", "", $fflporcentajecomision) .","; //comision
$sql .= "$Observacion"; //obsevaciones
$sql .= ");";