- var_dump: documentation ( source)
- preg_replace_callback: documentation ( source)
- str_replace: documentation ( source)
- strtoupper: documentation ( source)
<?php
echo preg_replace_callback('/(_?[a-z])/', function($u)
{
var_dump($u);
return str_replace('', '_', strtoupper($u));
}
, 'rob_tr');