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phpcamelcasing

Insert space between two captalized words?

I have two words combined like KitnerCoster And I want to add a space in the middle, is there any sort of trick anyone knows if separating two words that are both capitalized and that is the only difference.

Solution

  • Do you care if the first word is capitalized? If not, do

    // ASCII
preg_replace('/([a-z])([A-Z])/', '$1 $2', $string)
preg_replace('/([[:lower:]])([[:upper:]])/', '$1 $2', $string)

// Unicode (UTF-8)
preg_replace('/(\p{Ll})(\p{Lu})/u', '$1 $2', $string)

    If you do care, and want to fix KitnerCostner but leave kitnerCostner alone, then do

    // ASCII
preg_replace('/\b([A-Z]\S*[a-z])([A-Z])/', '$1 $2', $string)
preg_replace('/\b([[:upper:]]\S*[[:lower:]])([[:upper:]])/', '$1 $2', $string)

// Unicode (UTF-8)
preg_replace('/\b(\p{Lu}\S*\p{Ll})(\p{Lu})/u', '$1 $2', $string)

    I've given versions that only match ASCII letters and ones that match all Unicode characters. The Unicode ones are available in PHP 5.1.0.