Split TitleCase string into a flat array

Question

I want split a string of capitalized words into an array of individual words.

$str = 'CreateTechBook' 

Output:

array('Create','Tech', 'Book')

Answer 1

function splitCamelCase($str) {
 return preg_split('/(?<=\\w)(?=[A-Z])/', $str);
}

• zerkms: Great solution. Btw (?<=\\w) imho can be improved to (?<!^)
• xdazz: @zerkms Yep, that will be nice~

Answer 2

 preg_replace('/([a-z0-9])?([A-Z])/','1ドル 2ドル 3ドル',$string);