דניאל דנון wrote: > Lets assume I have the string "cats i saw a cat and a dog" > i want to strip everything except "cat" and "dog" so the result will be > "catcatdog", > using preg_replace. > > > I've tried something like /[^(dog|cat)]+/ but no success > > What should I do? >
Capture everything but only replace the backreference for the words: $r = preg_replace('#.*?(cat|dog).*?#', '\1', $s); -- Thanks! -Shawn http://www.spidean.com -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php