3v4l.org

run code in 300+ PHP versions simultaneously
<?php if ( ! defined('PHP_EOL')) { define('PHP_EOL', "\n"); } function normalise($string) { preg_match('~[0-9]+[a-z]+$~i', $string, $match); if ( ! isset($match[0])) { return false; } return strtoupper($match[0]); } $tests = array( 'Deu123456tx', 'Deu-12345tx', '12de45232gb', ); foreach ($tests as $test) { echo normalise($test), PHP_EOL; } /* 123456TX 12345TX 45232GB */
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 - 7.1.10, 7.2.0 - 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
123456TX 12345TX 45232GB

preferences:
192 ms | 405 KiB | 344 Q