conditional formatting html table in php with time stamp comparison

Answer 1

It seems like your timestamp is a String, you need to convert your string to a Unix TimeStamp using strtotime:

$rowTime=strtotime($row['TimeStamp']);

and then substract it from the actual time, as the previous answer, to obtain the difference in seconnds. Divide it by 60 and you get it on minutes.

$currenTime=time();
$diffSeconds=$currenTime-$rowTime;
$diffMinutes=$diffSeconds/60;

and then check if the difference is bigger than 60:

$myCSS="normalRow";
if ($diffMinutes>60) { $myCSS="differentRow"; }

and then use that CSS Style ($myCSS) in your table row:

echo '