3v4l.org

run code in 300+ PHP versions simultaneously
<?php $tzs = array( 'Europe/London', 'America/New_York', 'America/Costa_Rica', ); foreach ( $tzs as $tz ) { preg_match('/([[:alpha:]\/]{3,30})(?!.*([[:alpha:]\/]{3,30}))/', $tz, $match); echo $tz . ' => ' . $match[0] . PHP_EOL; }
Output for 4.3.10 - 4.3.11, 4.4.0 - 4.4.9, 5.0.2 - 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, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7, 7.2.29 - 7.2.33, 7.3.12 - 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
Europe/London => Europe/London America/New_York => York America/Costa_Rica => Rica
Output for 4.3.0 - 4.3.9, 5.0.0 - 5.0.1
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/OkrYv on line 10 Europe/London => Europe/LondonPHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/OkrYv on line 10 America/New_York => YorkPHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/OkrYv on line 10 America/Costa_Rica => RicaPHP_EOL
preferences:
256.38 ms | 402 KiB | 311 Q