Requête erronée : PHP me renvoie un "false", syntaxe ?

<?php include('connect.php'); 

function VerifierAdresseMail($adresse)
{
   $Syntaxe='#^[\w.-]+@[\w.-]+\.[a-zA-Z]{2,6}$#';
   if(preg_match($Syntaxe,$adresse))
      return true;
   else
     return false;
}

//remplacement de la virgule par un point
function virgule($nombre)
{
	$nombre = preg_replace('#(.+),(.+)#','$1.$2',$nombre);
	return $nombre;
}

//recuperation des valeurs des champs


//Societe emettrice $EM_champ
if (!empty($_POST["nomEm"]) AND !empty($_POST["adresseMail"]) AND !empty($_POST["telEmetteur"]) AND !empty($_POST["adresse"]) 
	AND !empty($_POST["siretEmettrice"]) AND !empty($_POST["tauxTva"]) AND !empty($_POST["numTVAIntra"]) AND !empty($_POST["numRC"]) AND !empty($_POST["IBAN"]) 
	AND !empty($_POST["BIC"]) AND !empty($_POST["RIB"]) AND !empty($_POST["nomSocFac"]) AND !empty($_POST["adresseFacturation"]) AND !empty($_POST["telFact"]) AND !empty($_POST["dateEch"]) 


	AND ((!empty($_POST["TJM"]) AND !empty($_POST["nbJPrest"])AND !empty($_POST["forfaitOuRegie"]=="Regie" ))
	OR (!empty($_POST["pourcent"]) AND $_POST["forfaitOuRegie"]=="Forfait"))){
//controle des champs

		$numContrat = $_POST["idContrat"];
		
		//Societe Emettrice
		$Em_id = $_POST["idEntiteEm"];	
		$Em_nom     = $_POST["nomEm"]; // à utiliser liste deroulante ?
		$mailTemp = $_POST["adresseMail"];
		$Em_Mail = $_POST["adresseMail"];
		$Em_telephone = $_POST["telEmetteur"];
		$Em_Adresse1 = $_POST["adresse"];
		$Em_Adresse2 = $_POST["adresse2"]; //facultatif
		$Em_Siret = $_POST["siretEmettrice"];
		$Em_TVAIntra = $_POST["numTVAIntra"];
		$Em_NRC = $_POST["numRC"];
		$Em_IBAN = $_POST["IBAN"];
		$Em_RIB = $_POST["RIB"];
		$Em_BIC = $_POST["BIC"];

		//Societe facturée $F_champ
		$Cl_id = $_POST["idEntiteCl"];
		$Cl_nom = $_POST["nomSocFac"]; // à utiliser liste deroulante
		$Cl_adresseFacturation = $_POST["adresseFacturation"];
		$Cl_adresseFacturation2 = $_POST["adresseFacturation2"]; //facultatif
		$Cl_adresseSociete = $_POST["adresseSocFacturee"]; //facultatif
		$Cl_adresseSociete2 = $_POST["adresseSocFacturee2"]; //facultatif
		$Cl_telephone = $_POST["telFact"];

		//Information facture
		$Fac_numBon = $_POST["numBon"]; //facultatif
		$Fac_numAv = $_POST["numAv"]; //facultatif
		$Fac_nbJ = $_POST["nbJPrest"];
		$Fac_date_Em = date("d-m-Y");
		$Fac_TJM = $_POST["TJM"];
		$Fac_dateEch = $_POST["dateEch"];
		$Fac_dateReg = $_POST["dateReglement"];
		//$Fac_echJ = date_diff($Fac_dateEch,$Fac_date_Em);
		$Fac_tauxTVA = $_POST["tauxTva"];
		
		//pour le debogage
		
		echo $Em_id . ("\n");
		echo $Em_nom. ("\n");
		echo $mailTemp.("\n");
		echo $Em_telephone.("\n");
		echo $Em_Adresse1.("\n");
		echo $Em_Siret. ("\n");
		echo $Em_TVAIntra . ("\n");
		echo $Em_NRC.("\n");
		echo $Em_NRC . ("\n");
		echo $Em_IBAN .("\n") ;
		echo $Em_RIB  . ("\n");
		echo $Em_BIC . ("\n");
		echo $Cl_id .("\n");
		echo $Cl_nom. ("\n");
		echo $Cl_adresseFacturation . ("\n");
		echo $Cl_adresseFacturation2 . ("\n");
		echo $Cl_adresseSociete . ("\n");
		echo $Cl_telephone. ("\n");
		echo $Fac_numBon . ("\n");
		echo $Fac_numAv . ("\n");
		echo $Fac_nbJ . ("\n");
		echo $Fac_date_Em .("\n") ;
		echo $Fac_TJM . ("\n");
		echo $Fac_dateEch .("\n") ;
		echo $Fac_dateReg .("\n") ;
		echo $Fac_tauxTVA .("\n") ;
		
		if ($_POST["forfaitOuRegie"] == 'Forfait'){

			$sql = "INSERT INTO facture VALUES ('', 
			$Em_id, 
			$Cl_id, 
			'$Em_nom',
			'', 
			'$Cl_nom', 
			'', 
			$Fac_date_Em, 
			'Facture', 
			$Fac_dateEch,
			'gaga', 
			'12-06-1993', 
			'Attente', 
			4, 
			'C', 
			$Fac_totalHT, 
			'gfdfg',
			'$Fac_numAv', 
			'$Fac_numBon', 
			6 ,
			'ga', 
			'traate', 
			0, 
			$Fac_tauxTVA, 
			$Fac_totalTTC, 
			'$Cl_nom')";
			
			echo $sql;
			$requete = mysqli_query($connection,$sql);
		}
		else {
			$Fac_totalTTC = $Fac_TJM * $Fac_nbJ * (1 + $Fac_tauxTVA); //ignorez
			$Fac_totalHT = 12; // Ignorez 
			$sql = "INSERT INTO facture VALUES ( NULL,
			$Em_id, 
			$Cl_id, 
			'$Em_nom',
			'', 
			'$Cl_nom', 
			'', 
			$Fac_date_Em, 
			'Facture',
			$Fac_dateEch,
			'gaga', 
			'12-06-1993', 
			'Attente', 
			4, 
			'C', 
			$Fac_totalHT, 
			'nnv',
			$Fac_numAv, 
			$Fac_numBon, 
			$Fac_nbJ, 
			'gaga', 
			'gaga' , 
			$Fac_TJM, 
			$Fac_tauxTVA, 
			$Fac_totalTTC, 
			'$Cl_nom')";
			
			echo $sql;
			
			$requete = mysqli_query($connection,$sql);
		}
		
		//affichage des résultats, pour savoir si l'insertion a marchée:
		if($requete){
			echo("L'insertion a été correctement effectuée pour la facturation<br>") ;
		}
		else
		{
			echo("L'insertion à échoué<br>") ;
		}
		}
		include('creer.php');
?>