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run code in 200+ php & hhvm versions
Bugs & Features
<?php $s = 'fooAbarB'; $valid = (bool) preg_match('#(?:[A-Z].*+){2}#', $s); var_dump($valid);
Output for 4.3.0 - 5.6.30, hhvm-3.10.1 - 3.17.3, 7.0.0 - 7.1.7
bool(false)