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run code in 150+ php & hhvm versions
Bugs & Features
<?php $content = <<<CONTENT @tag CONTENT; $matches = array(); var_dump(preg_match('/^\n\w*@/', $content, $matches, null, 0) === 1);
based on MhfBD
Output for 4.3.3 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
bool(true)
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.3.0 - 4.3.2
Warning: Wrong parameter count for preg_match() in /in/NeNdW on line 8 bool(false)