Question : Unique values. Mysql / php

in my table I have a column called, tags. So this tag column contains tags for the appropriate content.

so in some rows, this tag column contains similar values, for example

    name    |    tags
  name_1  |   tag1, tag2, tag3
  name_2  |   tag4, tag2, tag5

So when I select tags I get tag2, 2 times. Is there anyway to overcome this?

Answer : Unique values. Mysql / php

I'd be looking to use the Now() function.

Start Button Click sets myStartfieldname = Now()
Stop Button click sets myStopfieldname = Now()

No need to save the calculated time difference, simply use the two date/time field values to calculate when needed.

Cheers
JC