3v4l.org

run code in 300+ PHP versions simultaneously
<?php $blah = 'Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; Trident/6.0)'; if (preg_match('/MSIE ([0-9]*(?:\\.[0-9]*)?)([0-9.]*);/', $_SERVER['HTTP_USER_AGENT'], $matches)){ var_dump($matches); }
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Undefined array key "HTTP_USER_AGENT" in /in/T0DiZ on line 3 Deprecated: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated in /in/T0DiZ on line 3
Output for 8.0.0 - 8.0.30
Warning: Undefined array key "HTTP_USER_AGENT" in /in/T0DiZ on line 3
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.6 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined index: HTTP_USER_AGENT in /in/T0DiZ on line 3
Output for 7.3.32 - 7.3.33
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
Notice: Undefined index: HTTP_USER_AGENT in /in/T0DiZ on line 3

preferences:
241.29 ms | 402 KiB | 341 Q