Remove words by length

[CrashRoX]

Im trying to take a string of text and remove any word thats under 3 letters. I would like to do this with a regular expression. I could only get as far as matching the words and then putting them into an array using the regular expression: "/\w{3,25}/". I dont want them in an array, I want them just removed ouf of the text. Example would be:

"hello this is a test - string" would end up as "hello this test string".

Thanks in advance.

[devinemke]

here is a non-regex way:

$string = 'hello this is a test - string';

$explode = explode(' ', $string);
foreach ($explode as $key => $value)
{
	if (strlen($value) < 3) {unset($explode[$key]);}
}
$string = implode(' ', $explode);

echo $string;

[CrashRoX]

Thank you for your response. I was hoping to do it with a regular expression.

[kburger]

Why?

[Weedpacket]

You mean

\b\w{1,2}\b

?