Update[ ] depuis ajax en php sur MySQL

<input type="number"
name="Fr_Quantite[<?php echo $i;?>]" <?php echo $JS_NUMERIC; ?> 
id="Fr_Quantite_<?php echo $i;?>" 
value="<?php echo $data["Quantite"]; ?>" 
onClick="saveChanges(this);" >

<script type="text/javascript">
function saveChanges(object){   
    $.ajax({
        url: '_shop-upp.php',
        data: 'content=' + object.value,
        cache: false,
        error: function(e){
            alert(e);
        },
        success: function(response){
            // A response to say if it's updated or not
            alert(response);
        }
    });   
}
</script>

$arr_id = !empty($_GET['Fr_NumId']) ? $_GET['Fr_NumId'] : array();
$arr_Libelle = !empty($_GET['Fr_Libelle']) ? $_GET['Fr_Libelle'] : array();
$arr_Quantite = !empty($_GET['Fr_Quantite']) ? $_GET['Fr_Quantite'] : array();
$arr_Prix_Unitaire = !empty($_GET['Fr_Prix_Unitaire']) ? $_GET['Fr_Prix_Unitaire'] : array();
$arr_Remise = !empty($_GET['Fr_Remise']) ? $_GET['Fr_Remise'] : array();

try{
$Fact_BC = $pdo->prepare("UPDATE tb_shop_BC SET Libelle_TAG=:arr_Libelle, Quantite=:arr_Quantite, Prix_Unitaire=:arr_Prix_Unitaire, Remise=:arr_Remise WHERE NumId=:Fr_NumId");
foreach($arr_Libelle as $key => $value){
if($arr_Quantite[$key] <> 0){
$Fact_BC->bindParam(":Fr_NumId", $arr_id[$key]);
$Fact_BC->bindParam(":arr_Libelle", $value);
$Fact_BC->bindParam(":arr_Quantite", $arr_Quantite[$key]);
$Fact_BC->bindParam(":arr_Prix_Unitaire", $arr_Prix_Unitaire[$key]);
$Fact_BC->bindParam(":arr_Remise", $arr_Remise[$key]);
$Fact_BC->execute();
}}
}catch(PDOException $e){echo "<div class='alert alert-warning'>".$e->getMessage()."</div>"; die();}