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run code in 200+ php & hhvm versions
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<?php $regexp = '/^b\/ar$/i'; $regexpModifiers = substr(strrchr($regexp, "/"), 1); var_dump($regexpModifiers);
Output for 4.3.0 - 5.6.38, hhvm-3.10.1 - 3.22.0, 7.0.0 - 7.2.12
string(1) "i"