Question

I have used the following code before uploading an image into mysql database

Before encoding I have also done

$content = addslashes($content);
    $content = base64_encode($content);

Then after that I have tested the image in database it was entered fine.

But, whenever I try to download the same image it saves is well on the filesystem but never let me view it. As, it give me incorrect image file. Why is it so?

  $file_data= $this->get_attachment($id);
            $content = $file_data['content'];
                $content = stripslashes($content);
            $content =  base64_decode();
            header("Content-length: ". strlen($content));
            header("Content-type: ".$file_data['filetype']);
            header("Content-Disposition: attachment; filename=".$file_data['filename']);
            echo $content;

Answer 1

You are sending the file length of the base64 encoded string $file_data['content'] Instead, send the length of the decoded $content.

$content =  base64_decode($file_data['content']);
// Send the Content-length of the decoded data $content
// Should work, since strlen() is binary safe
header("Content-length: ". strlen($content));