<?php
$foo = '+++ Statistics Dump +++ (1499195839)
++ Incoming Requests ++
                 552 QUERY
++ Incoming Queries ++
                 546 A
                   1 NS
                   5 AAAA
++ Outgoing Queries ++
[View: default]
                1350 A
                  53 NS
                 446 AAAA
                 544 DS
                  35 DNSKEY
[View: _bind]
++ Name Server Statistics ++
                 552 IPv4 requests received
                   1 requests with EDNS(0) received
                 550 responses sent
                   1 responses with EDNS(0) sent
                 300 queries resulted in successful answer
                 541 queries resulted in non authoritative answer
                   6 queries resulted in nxrrset
                   9 queries resulted in SERVFAIL
                 235 queries resulted in NXDOMAIN
                 385 queries caused recursion
                   2 duplicate queries received
++ Zone Maintenance Statistics ++
++ Resolver Statistics ++
[Common]';

if (preg_match_all('#\s+(\d{1,3})\s[^\n]+\n#', $foo, $matches)) {
    $retornou = $matches[1];
    print_r($retornou); //Exibe todos numeros que pegou
} else {
    echo 'Nada encontrado';
}