CODE EXAMPLE FOR PHP

php extract last n words of string

<?php

$str = "NAME WITH SPACES FIELD1 FIELD2 FIELD3 FIELD4";

preg_match("/(S+)s(S+)s(S+)s(S+)$/", $str, $matches);

var_dump($matches);

/* array(5) {
  [0] => string(27) "FIELD1 FIELD2 FIELD3 FIELD4"
  [1] => string(6) "FIELD1"
  [2] => string(6) "FIELD2"
  [3] => string(6) "FIELD3"
  [4] => string(6) "FIELD4"
} */