Wednesday, February 9, 2011

Converting mysql TIME from 24 HR to AM/PM format

Hi,

I want to display the TIME field from my mysql table on my website, but rather than showing 21:00:00 etc I want to show 8:00 PM. I need a function/code to do this or even any pointers in the right direction. Will mark the first reply with some code as the correct reply.

  • Check this out: http://dev.mysql.com/doc/refman/5.0/en/date-and-time-functions.html

    I'd imagine you'd want date_format().

    Example: DATE_FORMAT($date, "%r")

  • Use DATE_FORMAT()

    DATE_FORMAT(<Fieled>,'%h:%i:%s %p')

    or

    DATE_FORMAT(<Fieled>,'%r')

  • You can also select the column as a unix timestamp using MYSQL's UNIX_TIMESTAMP() function. Then format it in PHP. IMO this is more flexible...

    select a, b, c, UNIX_TIMESTAMP(instime) as unixtime;
    

    The in PHP use the date() function & format it any way you want.

    <?php echo date('Y/m/d', $row->unixtime); ?>
    

    The reason I like this method as opposed to formatting it in SQL is b/c, to me, the date's format is a display decision & (in my opinion) formatting the date in SQL feels wrong... why put display logic in your SQL?

    Now - if you're not processing the data in PHP and are doing adhoc queries then DATE_FORMAT() is the way to go. But if you're gonna have the data show up on the web I'd go with UNIX_TIMESTAMP() and do the formatting in PHP...

    I mean... lets say you want to change how the date & time are displayed on the page... wouldn't it feel "off" to have to modify your SQL for a display tweak?

    my 2 cents

    Ali : I have a class that contains all of my date handling code. In the login code I just call a function from that class which formats the time using DATE_FORMAT(). So it doesn't really show in the display code and doesn't feel off Mysql dates are just more readable than unix timestamps.
  • I had been trying to do the same and got this page returned from a Google search. I worked a solution for the time 21:00:00;

    • using DATE_FORMAT(,'%l.%i%p') which returned 9.00PM

    • putting a LOWER() function around it to return 9.00pm

    So the full code is; DATE_FORMAT(,'%l.%i%p')

    Worked OK for me ...

  • use the date_format function, use this site to help you format it http://www.mysqlformatdate.com

    From gerard
  • use http://www.mysqlformatdate.com to help you format the date

    From Gerard

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