3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function uncamel($content, $separator = '_') { $content = preg_replace('#(?<=[a-zA-Z])([A-Z])(?=[a-zA-Z])#', "_$1", $content); var_dump($content); $content{0} = strtolower($content{0}); return $content; } var_dump(uncamel('rfqInternalRefNo'));
based on 1CFbm
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
string(19) "rfq_Internal_Ref_No" string(19) "rfq_Internal_Ref_No"