字符串转换为数组

Question

我希望通过Case Sensitivity将字符串拆分为数组。像

$str = 'CreateTechBook' 

转换为

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

Answer 1

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

Answer 2

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