3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $email = "cely@iqnection.com"; $hash = md5( strtolower( trim( $email ) ) ); printf('http://www.gravatar.com/avatar/%s?d=identicon', $hash);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
http://www.gravatar.com/avatar/68b0a06a22e632a4a79264d26d902288?d=identicon