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run code in 150+ php & hhvm versions
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<?php var_dump((bool) preg_match('/(text\html|application\/xhtml\+xml)/', strtolower("text/html; charset=UTF-8")));
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
bool(false)
Output for hhvm-3.10.0

Process exited with code 153.