PHP extract all whole numbers into an array

Question

I have following string:

15 asdas 26 dasda 354 dasd 1

and all that i want is to extract all numbers from it into an array, so it will looks li

Answer 1

$str = '15 asdas 26 dasda 354 dasd 1';
preg_match_all('/\d+/', $str, $matches);
print_r($matches);