<?PHP
$string = "A sample string with several words";
$words = EXPLODE(" ",$string);
FOR($i=0;$i<count($words);$i++){$query_string .= "LIKE '%".$words[$i]."%' OR ";}
$query_string = SUBSTR($query_string,0,STRLEN($query_string)-4);
$sql = "SELECT * FROM test WHERE title ".$query_string." ORDER BY id DESC";
?>