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<?php function smart_uc_words($string) { $string = strtolower(trim($string)); // Capitalise any word char preceded by a non-word char other than an apostrophe $string = preg_replace_callback('/(?<!\w|\')(\w)/', function($m){ return strtoupper($m[1]); }, $string); // Capitalise any word char which comes between an apostrophe and another word char $string = preg_replace_callback('/(?<=\')(\w)(?=\w)/', function($m){ return strtoupper($m[1]); }, $string); return $string; } echo smart_uc_words("s'hertogengebosch");
Output for git.master, git.master_jit, rfc.property-hooks
S'Hertogengebosch

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