Please install the GeSHi library. Refer to plugins/codesnippetgeshi/README.md for more information.'); } include_once 'geshi.php'; $json_string = file_get_contents('php://input'); $json_object = json_decode($json_string); /* file_put_contents('/tmp/colorize.txt', print_r($json_object, TRUE), FILE_APPEND); */ $geshi = new GeSHi($json_object->html, $json_object->lang); echo $geshi->parse_code();