image-embed-html.php

<?php

$files = array_slice($argv, 1);

foreach ($files as $file) {
   $picture = file_get_contents($file);
   $size = getimagesize($file);

   // base64 encode the binary data, then break it into chunks according to RFC 2045 semantics
   $base64 = chunk_split(base64_encode($picture));
   echo '<img src="data:' . $size['mime'] . ';base64,' . "\n" . $base64 . '" ' . $size[3] . ' />', "\n";
}