How to find 2 or more words in a string with preg_match?

hay there
How can i check for say 2 or more words in a string…
Imagine a search engine type scenario where the user enters a number of keywords to search
Now I know this checks for 2 words on a "OR" basis

PHP:

if(preg_match("/$findthis|$this/i", $text_to_search))

{

//do something

}

So this ill check to see if the

PHP:

$text_to_search

contains either

PHP:

$findthis

or…
How to find 2 or more words in a string with preg_match?

See original post by johnd123