3v4l.org

run code in 300+ PHP versions simultaneously
<?php $emails = array("cely@iqnection.com", "cely@tenable.com", "Chris.Ely@gmail.com"); foreach ($emails as $k => $email) { $hash = md5( strtolower( trim( $email ) ) ); printf('http://www.gravatar.com/avatar/%s?d=identicon\n', $hash); }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
http://www.gravatar.com/avatar/68b0a06a22e632a4a79264d26d902288?d=identicon\nhttp://www.gravatar.com/avatar/70d8b9cda7ec7054357e4fbf24d1085d?d=identicon\nhttp://www.gravatar.com/avatar/f327bb42c980cfe05865f0454bd9594b?d=identicon\n
preferences:
252.74 ms | 406 KiB | 360 Q