Question

I’ve got a string in PHP, MY_NEW_CLASS and I want to convert it to My_New_Class.

Is this possible using preg_replace or should I explode the string on the underscore, strtolower it, ucfirst it, then implode it back together?

I appreciate any help you can offer.

Answer 1

preg_replace by itself can’t really do it I’d think, but it’s not hard with a callback:

$str = preg_replace_callback('/(?<=\b|_)./',
                             function ($m) { return strtoupper($m[0]); },
                             strtolower($str));