Online PHP editor | refs for neqWO

<?php $content = '<iframe class="vine-embed" src="https://vine.co/v/Mlr5Kt22TKA/embed/simple" width="600" height="600" frameborder="0"></iframe><script async src="//platform.vine.co/static/scripts/embed.js" charset="utf-8"></script>'; preg_match('#(?<=vine.co/v/)[0-9A-Za-z]+#', $content, $matches); var_dump($matches);