Convert strings to title case

title_case.php

function title_case($string, $delimiters = array(" ", "-", "O'"), $exceptions = array("to", "a", "the", "of", "by", "and", "with", 'it', 'as', "for")) { 
       /* 
        * Exceptions in lower case are words you don't want converted 
        * Exceptions all in upper case are any words you don't want converted to title case 
        *   but should be converted to upper case, e.g.: 
        *   king henry viii or king henry Viii should be King Henry VIII 
        */ 
       foreach ($delimiters as $delimiter){ 
               $words = explode($delimiter, $string); 
               $newwords = array(); 
               foreach ($words as $word){ 
                       if (in_array(strtoupper($word), $exceptions)){ 
                               // check exceptions list for any words that should be in upper case 
                               $word = strtoupper($word); 
                       } elseif (!in_array($word, $exceptions)){ 
                               // convert to uppercase 
                               $word = ucfirst($word); 
                       } 
                       array_push($newwords, $word); 
               } 
               $string = join($delimiter, $newwords); 
       } 
       return $string; 
}