3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $key = 'key'; $var='var'; echo "<a href='/home.php?id=$var'>$key</a>";
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
<a href='/home.php?id=var'>key</a>