ช่วยด้วยครับ ใช้ Mysql ร่วมกับ imagecreatefromjpeg ไม่ได้

<?php
//By aPinan
//GPL License
//Have fun..!
function StringReturn ($User, $Pass) { 
						$Compond='';
						$Data1 ='';
						$Data1_2 = '';
						$Data4 = '';
						$Data5 = '';
						$Kprim = '';
						$Data = 'FC:AA:14:EE:7A:1D';
						$ImageName = '';

						
						$link = @mysqli_connect('103.27.200.170','fastedca_1','123456','fastedca_carinformation') or die("ไม่สามารถเชื่อมต่อฐานข้อมูล");
						mysqli_query($link,'SET NAMES UTF8');
						$sql = "SELECT * FROM `cardetails` where `Data15` = $User and `Data16` = $Pass";
						
						$r = mysqli_query($link,$sql);
						while($data = mysqli_fetch_array($r)){
						$Data1 = 	$data['0'];	
						$Data1_2 = 	$data['17'];		
						$Data4 = $data['3'];
						$Data5 = $data['4'];
						$Kprim = $data['19'];
						}	
						
						$Compond = $Data4.$Data5.$Kprim.$Data;
						echo $Compond;
   mysqli_close($link);
};


  $imgPath = '2.jpg';
    
	   	// The text to draw
$text = StringReturn ('ss','ss');
// Replace path by your own font path
$font = 'ARIALUNI.TTF';
    header("Content-type: image/jpeg");
	
  $image = @imagecreatefromjpeg($imgPath);
    $color = @imagecolorallocatealpha ($image, 255, 0, 0,70);

    // Add the text
	
imagettftext($image, 18, -37, 16.5, 17, $color, $font, $text);
    imagejpeg($image);
imagedestroy($image);
?>