3v4l.org

run code in 300+ PHP versions simultaneously
<?php if (strnatcmp(phpversion(),'5.4.7') >= 0) { $host="127.0.0.1" ; $port=9878; $timeout=30; $sk=fsockopen($host,$port,$errnum,$errstr,$timeout) ; if (!is_resource($sk)) { exit("connection fail: ".$errnum." ".$errstr) ; } else { echo "Connected"; } } ?>
Output for 5.4.7 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.26, 7.3.0 - 7.3.13, 7.4.0 - 7.4.1
Warning: fsockopen(): unable to connect to 127.0.0.1:9878 (Connection refused) in /in/8lqg5 on line 7 connection fail: 111 Connection refused
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 - 5.4.6
preferences:
46.15 ms | 410 KiB | 5 Q