3v4l.org

run code in 300+ PHP versions simultaneously
<?php $body = "something use Modules\Cms\Classes\Content; use Modules\Cms\Classes\Theme; use Modules\System\Classes\ApplicationException; use Modules\Cms\Classes\Router; class ... "; $namespaces = array(); preg_match_all('/(use\s[a-z0-9_\\]+;)/m', $body, $namespaces); print_r($namespaces);
Output for 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 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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 - 8.2.18, 8.3.0 - 8.3.6
Warning: preg_match_all(): Compilation failed: missing terminating ] for character class at offset 19 in /in/kYlRP on line 16 Array ( )
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: missing terminating ] for character class at offset 19 in /in/kYlRP on line 16 Array ( )

preferences:
333.48 ms | 402 KiB | 459 Q