3v4l.org

run code in 300+ PHP versions simultaneously
<?php class HistoryBlob {} class ConcatenatedGzipHistoryBlob extends HistoryBlob { var $mVersion = 0, $mCompressed = false, $mItems = array(), $mDefaultHash = ''; } $blob = new ConcatenatedGzipHistoryBlob(); $blob->mItems[] = 'foo'; print serialize($blob);

preferences:
23.52 ms | 404 KiB | 5 Q