将HTML添加到图像并使用php下载

Question

I am trying to add following HTML table to an image and then download it as an .jpg file but instead it giving me white image which is given in $dir. Please have a look and guide what i am missing or what is wrong with this code

$dir = "../images/white.jpg";

$text = "tableHTML";
imagettftext($dir, 20, 0, 10, 20, $text);

imagepng($dir);
//$name = './img/ok.png';
header('Pragma: public');
header('Cache-Control: public, no-cache');
header('Content-Type: application/octet-stream');
header('Content-Length: ' . filesize($dir));
header('Content-Disposition: attachment; filename="' . basename($dir) . '"');
header('Content-Transfer-Encoding: binary');

readfile($dir);

the output image.jpg would be like this

Sr # | ID    | Bar Code  | Notes
1    | 1261  | ||||||||  | Test
2    | 6781  | ||||||||  | test 
3    | 8895  | ||||||||  | test 
4    | 5578  | ||||||||  | test 
5    | 1123  | ||||||||  | test 

*test data

Answer 1

You're missing one parameter. Following the documentation -> http://php.net/manual/en/function.imagettftext.php

imagettftext ( resource $image , float $size , float $angle , int $x , int $y , int $color , string $fontfile , string $text )

you're using

imagettftext((image)$dir, (size)20, (angle)0, (x)10, (t)20, (color)$text);

maybe you're missing the color before the text ;)