for (@testarray) {
  if (s[(<tr><th>PC Number</th><th>Cores</th><th>Date</th><th>Customer</th><th>Target</th><th>C/O Time</th><th>Update time</th><th>Build Time</th><th>Status</th><th>Changes from Last Build</th></tr>)][$1$line]) {
   last; # found it, done.
  }
}