Limit Words To String( title, content, anything )

gistfile1.php

<?php
function string_limit_words($string, $word_limit){
     $words = explode(' ', $string, ($word_limit + 1));
     if(count($words) > $word_limit)
          array_pop($words);
     return implode(' ', $words);
}

//Usage
//Suppose for wordpress content/excerpt length
$excerpt = get_the_excerpt();
echo string_limit_words($excerpt,12);
?>