php - Proper way to download image from server using headers -

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i made script creates .jpg file , saves server, want make downloadable user when open image downloaded error corrupted file, although image not corrupted because can open server (manually image viewer). these headers:

header('content-description: file transfer'); header("content-type: application/octet-stream"); header("content-disposition: attachment; filename=image.jpg"); readfile('image.jpg');

i tried change content-type image/jpeg same results


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