preg_replace

I need to replace a space delimited string in a db query with apostrophy comma apostrophy.

I have this but it pukes.

PHP Code:

---

preg_replace('/ /', '', '', $myvar['keywords']) 


---

Basically its ....

item1 item2 item3

And should be ...

item1', 'item2', 'item3

as I can easily wrap the external apostrophies around the result to make...

'item1', 'item2', 'item3'


What escape sequence do I need if any?

Thanks

There is no need to use preg_replace. A simple str_replace will do it.

PHP Code:

---

$items_list = 'item1 item2 item3';
$items = "'".str_replace(' ', "', '", trim($items_list))."'"; 


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I have this now but its not matching any results.

PHP Code:

---

SELECT * FROM Table1
WHERE
(somefield = 1)
 AND
(v.keywords IN('" . str_replace(' ', "', '", trim($myvar['keywords'])) . "')) 


---

No errors but no results either. Could it be that the keywords field has a space delimited values in it? I just need to match any of those workds woith any that are in $myvar.