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@ 2013-12-17T20:42:45Z

<?php

function to_camel_case($str) {
    return preg_replace_callback('/_([a-z])/', function($match) { return strtoupper($match[1]); }, $str);
  }

echo to_camel_case('rob_tr_yuui');

Output
Performance
VLD
References
Branches

preg_replace_callback: documentation ( source)
strtoupper: documentation ( source)

preferences:dark modelive preview

36.64 ms | 402 KiB | 5 Q