3v4l.org

run code in 300+ PHP versions simultaneously
<?php $services = array('http', 'ftp', 'ssh', 'telnet', 'imap', 'smtp', 'nicname', 'gopher', 'finger', 'pop3', 'www'); foreach ($services as $service) { $port = getservbyname($service, 'tcp'); echo $service . ": " . $port . "<br />\n"; }
Output for 7.3.32 - 7.3.33, 7.4.26 - 7.4.33, 8.0.13 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
http: <br /> ftp: <br /> ssh: <br /> telnet: <br /> imap: <br /> smtp: <br /> nicname: <br /> gopher: <br /> finger: <br /> pop3: <br /> www: <br />
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 - 5.5.36, 5.6.0 - 5.6.22, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 8.0.0 - 8.0.12
http: 80<br /> ftp: 21<br /> ssh: 22<br /> telnet: 23<br /> imap: 143<br /> smtp: 25<br /> nicname: 43<br /> gopher: 70<br /> finger: 79<br /> pop3: 110<br /> www: 80<br />

preferences:
233.88 ms | 408 KiB | 392 Q