Re: Get the date / time difference with PHP

admin · #1 31-May-2005, 05:57

I just posted a GID Community blog entitled: Get the date / time difference with PHP.

Quote:

How do I calculate the difference between 2 time or date values with PHP? This was a question posed by justinhn, a member of GIDForums, today.

It seems like a really popular question, I was so sure there would already be something ready-made out there. Searching the WWW with my favourite search engine, I was a bit surprised that it was clearly not the case -- okay, there were some example codes that do calculate the difference in time values, but they were not quite what I was hoping to find.... more.

Please let me know what you think.

This is an auto-generated message posted by GIDNetwork™ on behalf of the author.

debembie · #2 14-Jun-2006, 01:41

Hi all,
i'm new here, i have problem with calculating time difference , i've read the thread "Time Calculation not considering minutes" by justinhn, and i found the answer in "Get the date / time difference with PHP" by admin, so i've tried that code and it works!, but when i tried to input:
example: START time value = 23:30 and END time value = 24:00, the result was error,and then i change END time to= 00:00 and the result still error, i didn't understand where are the problems,and why it could happen......:?: ,
and the main problems:!: : i want to ask about how to calculating time difference in HH:MM:SS (hours:minutes:seconds) between two different date,for the example, the input are :
$start_date : 2006-06-08, $start_time : 23:30
$end_date : 2006-06-09, $end_time : 02:15,

Please help me to solve this problem, because i can't find any answer from any search engine like google or yahoo.

THANKS after and before.:smile:

JdS · #3 14-Jun-2006, 07:37

Thank you for your question.

If you ask me how many hours between 03:00:00 and 00:00:00, I can immediately assume you mean midnight (00:00:00) of tomorrow. But a computer doesn't assume, so if you submit just the HH:MM:SS bits to the function, it assumes it's midnight of today and not midnight of tomorrow (which is what I assume you meant). Get it?

If you look at the insides of the function, you will see that the unixtimestamp is set by this line:

PHP Code:


//...

    $uts['start']      =    strtotime( $start ); // ref. to http://www.gnu.org/software/tar/manual/html_node/tar_110.html#SEC110 for valid formats
    $uts['end']        =    strtotime( $end );

It's always safe to include the date values too... for example, using your example values...

PHP Code:


// what is the time difference between $end and $start?
if( $diff=@get_time_difference("$start_date $start_time", "$end_date $end_time") ) // <-- HERE!
{
  echo "Hours: " .
       sprintf( '%02d:%02d', $diff['hours'], $diff['minutes'] );
}
else
{
  echo "Hours: Error";
}

debembie · #4 14-Jun-2006, 21:47

Thanks alot for the answer, i really appreciated that.
i've tried the code and it's work, but we've another problem here, when we have input like this :

$start_date = '2006-06-08';
$start_time = '22:30';
$end_date = '2006-06-09';
$end_time = '22:30';
why the result are(in HH:MM) : 00:00 hours ? not 24 (hours):00 (minutes)?

or....

//for example, it have different about 2 days
$start_date = '2006-06-08';
$start_time = '22:30';
$end_date = '2006-06-10';
$end_time = '10:30';

why the result are(in HH:MM) : 12:00 hours ?, not 36 (hours): 00 (minutes)
how can we get total time, is it possible to calculating them?

Thanks.

rockyford1000 · #5 15-Nov-2006, 23:43

hey..in relation..

i have also problem in tracing the time difference

my start date is=08.1.2006
my end date is=12.1.2006
how will i able to know that the if i already expire or not..in short the date between 08.1.2006 and 12.1.2006

please im new here i need some help..

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