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run code in 300+ PHP versions simultaneously
<?php class DummyStream { public function stream_open($path, $mode, $options, &$opened_path) { return true; } public function stream_read($count) { var_dump($count); return false; } public function stream_eof() { return false; } public function stream_seek($offset, $whence) { return true; } public function stream_tell() { return 0; } } stream_wrapper_register('dummy', 'DummyStream'); $fp = fopen('dummy://foo/bar', 'r'); fread($fp, 16);

preferences:
36.93 ms | 402 KiB | 5 Q