3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $content = <<<CONTENT a @tag CONTENT; $matches = array(); var_dump(preg_match('/^(\A|\n)\w*@/', $content, $matches, 0, 1) === 1);
based on 5tWHJ
Output for 4.3.3 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
bool(false)
Output for 4.3.0 - 4.3.2
Warning: Wrong parameter count for preg_match() in /in/U5H3T on line 8 bool(false)