Error ตรง sql ที่ select ออกมาครับ ช่วยดูโค้ดหน่อย หาตั้งนานแล้วไม่เจอครับ

$sql="select * from ty_sendjobvacancies where id_job=$_GET[sendF] order by id DESC";

$sql="select * from ty_sendjobvacancies where id_job='$_GET[sendF]' order by id DESC";

$sql="select * from ty_sendjobvacancies where id_job='$_GET[sendF]' order by id DESC";

<a href="javascript:sendtofriend.php?sendF=<?=$rec['id_job'];?>" onClick="javascript:window.open('sendtofriend.php?sendF=<?=$rec['id_job']?>','','scrollbars=no,width=330,height=280,left=560,top=300');">Send to Friends</a>

<form action="sendtofriends.php?sendFS=<?=$_GET['sendF']?>" method="post" name="send_jobvacation" target="_parent">
.
.
.
</from>

require_once("Class/class.phpmailer.php"); 
require_once("Class/class.smtp.php");

// create database connection
$db = new MysqlDB(DB_HOSTNAME, DB_DATABASE, DB_USERNAME, DB_PASSWORD);

@mysql_connect(DB_HOSTNAME,DB_USERNAME,DB_PASSWORD)or die(mysql_error());
@mysql_select_db(DB_DATABASE)or die(mysql_error());

/*// strip all vars
if (get_magic_quotes_gpc() == 1) {
	stripSlashesArray($_GET);
}*/

$body_id = 'Send job vacancies';
// include top
include $path_to.'top.incs.php';

$datetoday=date('Y-m-d');

$sql_save="insert into ty_sendjobvacancies(id_job,sender,from_email,receive,to_email,detail,datetoday)values('$_POST[id_sendF]','$_POST[txtsender]','$_POST[Emai_s]','$_POST[txtreceive]','$_POST[Email_r]','$_POST[txtdetail]','$datetoday')";
$query=mysql_query($sql_save)or die (mysql_error());

if(isset($_POST['id_sendF'])){
$sendFS=$_GET['sendFS'];
  $sql="select * from ty_sendjobvacancies where id='$sendFS' order by id DESC";
  //$sql="select * from ty_sendjobvacancies order by id DESC";
  $q=mysql_query($sql) or die (mysql_error());
  echo $sql ."<br>";
  while($rec=mysql_fetch_assoc($q)){
//code sned mail phpmailer
$mail = new PHPMailer();   
$mail->IsHTML(true);   
$mail->IsSMTP();  
$mail->CharSet = "utf-8";
$mail->SMTPAuth = true; // enable SMTP authentication  
$mail->SMTPSecure = "ssl"; // sets the prefix to the servier  
$mail->Host = "smtp.gmail.com"; // sets GMAIL as the SMTP server  
//$mail->Host = "mail.toscanavalley.com"; // sets GMAIL as the SMTP server    
$mail->Port = 465; // set the SMTP port for the GMAIL server   
$mail->Username = "[email protected]"; // GMAIL username    
$mail->Password = "nottpoo9978#9978"; // GMAIL password   
//$mail->Username = "[email protected]"; // GMAIL username    
//$mail->Password = "poopoopoo"; // GMAIL password   
$mail->From = "[email protected]"; // "[email protected]";   
$mail->FromName = "$rec[sender]";  // set from Name   
$mail->Subject = "Job Vacancies";    
$mail->Body =" Send Job Vacancies from friend to you.<br><br> ".
	"Name Sender :$rec[sender]<br>".
	"E-mail Sender : $rec[from_email]<br>".
	"Name Receive : $rec[receive]<br>".
	"E-mail Receive : $rec[to_email]<br>".
	"Detail  : $rec[detail]<br>".	
	"link  : <a href=http://localhost/toscana_beta/en/contact/application_detail.php?detail=$rec[id_job]>http://www.toscanavalley.com/en/contact/application_detail.php?detail=$rec[id_job]</a><br>".
	"Thank <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;From Automatic E-mail systems.(www.toscanavalley.com)";	
$mail->AddAddress("$rec[to_email]", "Job Vacancies"); // to Address   
//$mail->AddAttachment("application/$rec[resume_file]");   
//$mail->AddAttachment("zip/PHPMailer_v5.2.zip");   
//$mail->AddCC("[email protected]", "Job Vacancies"); //CC   
//$mail->AddBCC("[email protected]", "Job Vacancies"); //BCC 
$mail->set('X-Priority', '1'); //Priority 1 = High, 3 = Normal, 5 = low :Security
    }//while
}//if
if(!$mail->Send()) {
    echo "Mailer Error: " . $mail->ErrorInfo;
	return false;
	} else {
    echo "Message sent!";
	return true;
} 
?>