Skip to main content

timezone between NY and London

Image
By User


i have 2 servsers 1 in america (NY) and 1 in europe (London)



my servers are synchronzied as close as possible. now when someone from europe go to my site it use the london server and same idea for the americas.



every now and then i do maintenance on my site, therefore i redirect the traffic to the other server. becuase of the timezone difference i need to make it transparent to the user so if a person from america is redirected to the server in london (due to maintenance) i need to show to him the EDT timezone



here my issue. i have query i run from mysql with dates (one is last date logged)



i want to display it correctly so my question is



should i use mysql to transform the date or php? which one is better and faster?



thanks


Source: Tips4all, CCNA FINAL EXAM
Labels:

Comments

  1. UserMay 11, 2012 at 4:38 AM

    I think the best way would be to store the last login time as an UTC-value in the DB and use PHP to convert that value to the visitor's timezone. I'd always store any timestamp data as UTC in the DB, also to avoid problems with DST and all that stuff. I think in terms of speed there is not much difference if the DB calculates the display value for you or if your PHP script does it. However since your PHP script is your presentation layer, it should take care of date formatting instead of the DB.

    ReplyDelete

Post a Comment

Popular posts from this blog

Why is this Javascript much *slower* than its jQuery equivalent?

By User
I have a HTML list of about 500 items and a "filter" box above it. I started by using jQuery to filter the list when I typed a letter (timing code added later): $('#filter').keyup( function() { var jqStart = (new Date).getTime(); var search = $(this).val().toLowerCase(); var $list = $('ul.ablist > li'); $list.each( function() { if ( $(this).text().toLowerCase().indexOf(search) === -1 ) $(this).hide(); else $(this).show(); } ); console.log('Time: ' + ((new Date).getTime() - jqStart)); } ); However, there was a couple of seconds delay after typing each letter (particularly the first letter). So I thought it may be slightly quicker if I used plain Javascript (I read recently that jQuery's each function is particularly slow). Here's my JS equivalent: document.getElementById('filter').addEventListener( 'keyup', function () { var jsStart = (new Date).getTime()...
3 comments
Read more

Is it possible to have IF statement in an Echo statement in PHP

By User
Thanks in advance. I did look at the other questions/answers that were similar and didn't find exactly what I was looking for. I'm trying to do this, am I on the right path? echo " <div id='tabs-".$match."'> <textarea id='".$match."' name='".$match."'>". if ($COLUMN_NAME === $match) { echo $FIELD_WITH_COLUMN_NAME; } else { } ."</textarea> <script type='text/javascript'> CKEDITOR.replace( '".$match."' ); </script> </div>"; I am getting the following error message in the browser: Parse error: syntax error, unexpected T_IF Please let me know if this is the right way to go about nesting an IF statement inside an echo. Thank you.
5 comments
Read more