Php put a space in front of capitals in a string (Regex)

Question

I have a number of strings which contain words which are bunched together and I need to seperate them up.

For example ThisWasCool - This Was Cool
MyHomeIsHere -

Answer 1

$string = preg_replace('/[A-Z]/', ' $0', $string);

Maybe run the result through ltrim after.

$string = ltrim(preg_replace('/[A-Z]/', ' $0', $string));