php explode at capital letters?

Question

I have strings like:

$a = 'helloMister'; $b = 'doggyWaltz'; $c = 'bumWipe'; $d = 'pinkNips'; 

How can I explode at the capital letters? I have search on google for some time and came back with nothing!

Answer 1

If you want to split helloMister into hello and Mister you can use preg_split to split the string at a point just before the uppercase letter by using positive lookahead assertion:

$pieces = preg_split('/(?=[A-Z])/',$str); 

and if you want to split it as hello and ister you can do:

$pieces = preg_split('/[A-Z]/',$str);