regex - Split camelCase word into words with php preg_match (Regular Expression) -

how go splitting word:

onetwothreefour 

into array can get:

one 2 3 4 

with preg_match ?

i tired gives whole word

$words = preg_match("/[a-za-z]*(?:[a-z][a-za-z]*[a-z]|[a-z][a-za-z]*[a-z])[a-za-z]*\b/", $string, $matches)`; 

you can use preg_match_all as:

preg_match_all('/((?:^|[a-z])[a-z]+)/',$str,$matches); 

see it

explanation:

(        - start of capturing parenthesis.  (?:     - start of non-capturing parenthesis.   ^      - start anchor.   |      - alternation.   [a-z]  - 1 capital letter.  )       - end of non-capturing parenthesis.  [a-z]+  - 1 ore more lowercase letter. )        - end of capturing parenthesis.