Regex - How to replace the last 3 words of a string with PHP

Question

Trying to wrap the last 3 words in a tag

$str = \'Lorem ipsum dolor sit amet\';
$h2 = preg_replace(\'/^(?:\\w+\\s\\w+)(\\s\\w+)+/\', \'         


        

Answer 1

Here it is:

$h2 = preg_replace('/(\w+\s\w+\s\w+)$/', '$1', $str);

Since its last three words, so make the left side(from begin) as open to have the match.