3v4l.org

run code in 300+ PHP versions simultaneously
<?php $sites = array( 'site.ru', 'www.site.ru', 'en.site.ru', 'www.en.site.ru', 'de.site.ru', 'www.de.site.ru', ); foreach($sites as $site) { preg_match_all('/^(?www.)?(en|de)?(.*)/i', $site, $matches); var_dump($matches); }
Output for 5.6.0 - 5.6.27, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 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 - 8.2.19, 8.3.0 - 8.3.7
Warning: preg_match_all(): Compilation failed: unrecognized character after (? or (?- at offset 3 in /in/LHflA on line 13 NULL Warning: preg_match_all(): Compilation failed: unrecognized character after (? or (?- at offset 3 in /in/LHflA on line 13 NULL Warning: preg_match_all(): Compilation failed: unrecognized character after (? or (?- at offset 3 in /in/LHflA on line 13 NULL Warning: preg_match_all(): Compilation failed: unrecognized character after (? or (?- at offset 3 in /in/LHflA on line 13 NULL Warning: preg_match_all(): Compilation failed: unrecognized character after (? or (?- at offset 3 in /in/LHflA on line 13 NULL Warning: preg_match_all(): Compilation failed: unrecognized character after (? or (?- at offset 3 in /in/LHflA on line 13 NULL
preferences:
194.06 ms | 405 KiB | 232 Q