- base64_encode: documentation ( source)
- fread: documentation ( source)
- fopen: documentation ( source)
- filesize: documentation ( source)
<?php
$img_src = "http://www.keenthemes.com/preview/conquer/assets/plugins/jcrop/demos/demo_files/image1.jpg";
$imgbinary = fread(fopen($img_src, "r"), filesize($img_src));
$img_str = base64_encode($imgbinary);
echo $img_str;