- stream_filter_append: documentation ( source)
- fclose: documentation ( source)
- fwrite: documentation ( source)
- fopen: documentation ( source)
<?php
$fp = fopen('php://output', 'w');
stream_filter_append($fp, 'string.toupper', STREAM_FILTER_WRITE);
fwrite($fp, "Code de lancement: 151215");
fclose($fp);