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run code in 200+ php & hhvm versions
Bugs & Features
<? echo preg_match('~[0-9a-zA-Z]{3,20}~', 'bob'); ?>
based on IRhSe
Output for 5.4.0 - 7.2.0
1
Output for 4.3.0 - 5.3.29
<? echo preg_match('~[0-9a-zA-Z]{3,20}~', 'bob'); ?>