<?php
function get_numerics ($str) {
preg_match_all('/\d+/', $str, $matches);
sort($matches);
return $matches[0];
}
$one = "aclCheckDate('20050950', '==') or aclCheckDate('20050922', '==') or aclCheckDate('20050923', '==') or aclCheckDate('20050926', '==') or aclCheckDate('20050927', '==') or aclCheckDate('20050928', '==') or aclCheckDate('20050929', '==') or aclCheckDate('20050930', '==')";
print_r(get_numerics($one));