$re = '/(?=.*\b([a-z]{1,2}\d+)\b)(?=.*\b(\d+)\b)(?=.*((?:\b[a-z]+\b\s*)+)).+/mi';
$str = 'XD079523 ALFRED ROMEO 19830311
ALFRED BETA GAMMA 19830311 AD929523
BETA FERNANDEZ AS079523 19830311
19830311 BETA MAX AS079523
KK079523 19830311 ANGEL MARINA VINES
19830121 BX079523 VINCENT EVERHART';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php