Online PHP editor | output for oprfS

<?php class StreamFilter extends php_user_filter { public function filter($in, $out, &$consumed, $closing) { //var_dump('FILTERING!'); while ($bucket = stream_bucket_make_writeable($in)) ; if ($closing || feof($this->stream)) { $streamUri = substr(stream_get_meta_data($this->stream)['uri'], strlen('php://filter/read=asd/resource=')); //$buffer = strtoupper(file_get_contents($streamUri)); $buffer = 'HA'; $bucket = stream_bucket_new($this->stream, $buffer); stream_bucket_append($out, $bucket); return PSFS_PASS_ON; } return PSFS_FEED_ME; } } stream_filter_register('asd', 'StreamFilter'); function shut() { $stream = 'php://filter/read=asd/resource=/home/vagrant/test-register-shutdown-function/test.txt'; $stream = 'php://filter/read=asd/resource=/in/Yjm5O'; var_dump(file_get_contents($stream)); //$stream = 'php://filter/read=string.toupper/resource=/home/vagrant/test-register-shutdown-function/test.txt'; //var_dump(file_get_contents($stream)); } register_shutdown_function('shut'); /* class A { public function __destruct() { } } new A(); */ die;