This PHP snippet returns a status code when given HTTP headers in an array where each object is a string of one line.

php-parse-http-headers-for-status-code.php

function parse_http_headers_for_status($headers) {
  foreach ( $headers as $line ) {
    preg_match('#HTTP/\d+\.\d+ (\d+)#', $line, $matches);
    if ( $matches[1] ) {
      $status_code = $matches[1];
    }
  }
  return $status_code;
}

I need to test this more thoroughly.