imap主体的Base64编码不起作用

Question

I have looked all over the place for the past couple of days and still cant find the answer. I have an imap php app that fetches emails from my outlook account, all works perfect and the messages are displayed nice but im having an issue with a couple of emails, bodytype returns as base64 but it doesnt encode properly (only on a couple, all other base64 get nicely decoded). but this one before decoding is...

/9j/4AAQSkZJRgABAQEAYABgAAD/2wBDAAoHBwgHBgoICAgLCgoLDhgQDg0NDh0VFhEYIx8lJCIf IiEmKzcvJik0KSEiMEExNDk7Pj4+JS5ESUM8SDc9Pjv/wAALCAB4AHgBAREA/8QAHwAAAQUBAQEB AQEAAAAAAAAAAAECAwQFBgcICQoL/8QAtRAAAgEDAwIEAwUFBAQAAAF9AQIDAAQRBRIhMUEGE1Fh ByJxFDKBkaEII0KxwRVS0fAkM2JyggkKFhcYGRolJicoKSo0NTY3ODk6Q0RFRkdISUpTVFVWV1hZ WmNkZWZnaGlqc3R1dnd4eXqDhIWGh4iJipKTlJWWl5iZmqKjpKWmp6ipqrKztLW2t7i5usLDxMXG x8jJytLT1NXW19jZ2uHi4+Tl5ufo6erx8vP09fb3+Pn6/9oACAEBAAA/APZqKKKKKKKKKKKKKKKK KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK/9k=

and after decoding its even more gibberish that it stared off with instead of any meaningful text. What is this and how do i decode it properly ?? had a look at online decoders and all say its invalid

heres an image of what the email looks like in outlook

Answer 1

Demo:: http://phpfiddle.org/main/code/876m-khae

Reference: http://php.net/manual/en/function.imagecreatefromstring.php

View Online Tools Decode Here: https://www.base64decode.org/

<?php

$base64_string ="/9j/4AAQSkZJRgABAQEAYABgAAD/2wBDAAoHBwgHBgoICAgLCgoLDhgQDg0NDh0VFhEYIx8lJCIf IiEmKzcvJik0KSEiMEExNDk7Pj4+JS5ESUM8SDc9Pjv/wAALCAB4AHgBAREA/8QAHwAAAQUBAQEB AQEAAAAAAAAAAAECAwQFBgcICQoL/8QAtRAAAgEDAwIEAwUFBAQAAAF9AQIDAAQRBRIhMUEGE1Fh ByJxFDKBkaEII0KxwRVS0fAkM2JyggkKFhcYGRolJicoKSo0NTY3ODk6Q0RFRkdISUpTVFVWV1hZ WmNkZWZnaGlqc3R1dnd4eXqDhIWGh4iJipKTlJWWl5iZmqKjpKWmp6ipqrKztLW2t7i5usLDxMXG x8jJytLT1NXW19jZ2uHi4+Tl5ufo6erx8vP09fb3+Pn6/9oACAEBAAA/APZqKKKKKKKKKKKKKKKK KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK/9k=
";

$decode_data = base64_decode($base64_string);

$image_create = imagecreatefromstring($decode_data);
if ($image_create !== false) {
    header('Content-Type: image/png');
    imagepng($image_create);
    imagedestroy($image_create);
}
else {
    echo 'An error occurred.';
}
?> 

NOTE:: You Can Also Use the base64ToImage funtion to decode this

Example:

<?php

function base64ToImage($base64_string, $output_file) {

     $file = fopen($output_file, "wb");

     $data = explode(',', $base64_string);

     fwrite($file, base64_decode($data[1]));
     fclose($file);

     return $output_file;
}


?>