DEBUG: $j =0

get_headers() was run with arg: http://gibsondavid.dyndns.org.:8080 and returned this array...

DEBUG: $j =1

get_headers() was run with arg: http://gibsondavid.dyndns.org.:80 and returned this array...

13:00:02 on 21-Nov	no_change	v3.3	bcra.org.uk	31.25.186.126	cron=yes	gibsondavid.dyndns.org.	8080	[Connection timed out]	80	[Connection timed out]

The log file will have a no-change character appended. That is, override $put with a dot

The no-change char will be a /, to mark the hour