I'm trying to figure out how to get 2 or more records moved from one array to another randomly?

This is what I have so far:
PHP Code:
$array1 = array('1','2','3','4','5','6','7','8','9');

$random rand(0,sizeof($array1)-1);

$getfromarray $array1($random);

unset(
$array1[$random]); 
As above I can get one number from the array above and remove it from the array, but not sure how to get multiple from the array and how to insert it into a new array?

Please help and thanks in advance :-)