get first three words of sentance..

[mfacer]

I need to get the first three words of a sentance and dont really know how...

I made the sentance into an array, but it seemed to be a long way around...

eg:
$string = "this is my test page";

I want the string to then be

$string = "this is my"

will it effect the code if there is only say one word?? eg:

$string = "david"

?? I just am clueless with this one!! thanks for any advice...

[Roger_Ramjet]

Well, the normal way would be to explode() the string into an array and then just list the first 3 elements. No prob if there are not 3 words, just use count to find out how many there are before you process the array.