The first example here may help: http://us3.php.net/manual/en/function.time.php 2009/6/16 Matthew Croud <matt@xxxxxxxxxxxxxxxxxx> > Hi Dajve and Tom, > > Thanks again, I totally didn't realise that this function is yet to be > implemented in the mainstream PHP, > > So is there no function that exists in vanilla PHP that can take two > dates/times and supply the difference ? > If there isn't I do apologise, i've been talking to my friend who does > ASP.net and he said he was sure there is for PHP. > > > > > > > On 16 Jun 2009, at 13:11, Dajve Green wrote: > > >> Hi Matthew, >> >> A quick note on the DateTime::diff() method - it's only available as from >> PHP 5.3, which is currently in release candidate stage, meaning unless you >> have your own server running PHP, it won't be available to use (hopefully >> - >> I would be sceptical of any webhost which rolls out RCs on production >> servers). >> >> If you need to know what version of PHP you're running, use: >> phpversion() or phpinfo() >> >> -----Original Message----- >>> From: Matthew Croud [mailto:matt@xxxxxxxxxxxxxxxxxx] >>> Sent: 16 June 2009 12:42 >>> To: Tom Chubb >>> Cc: PHP General list >>> Subject: Re: difference between two times? Date_diff and >>> DateTime::diff >>> >>> Hi Tom, >>> >>> Thanks for the reply, I believe I have a fair understanding of >>> functions, and I have followed the example on the PHP manual page ( >>> http://uk3.php.net/manual/en/function.date-diff.php >>> ), ideally I want to know how to use the class DateTime::diff, how >>> can I use the DateTime::diff to get the difference between two times/ >>> dates ? I suppose then I'm after the syntax >>> >>> would it be like this for example: >>> $DIfferenceInTime = DateTime::diff(10:00,12:32); >>> >>> Thanks again for helping me out. >>> >>> >>> >>> On 16 Jun 2009, at 12:33, Tom Chubb wrote: >>> >>> Matt, >>>> Do you understand how to use functions? >>>> A function is defined like this: >>>> >>>> function () { >>>> //code goes here >>>> } >>>> >>>> You can pass arguments to be used in a function like this: >>>> >>>> function($arg1, $arg2) { >>>> //code goes here >>>> } >>>> >>>> In the first example on the following page: >>>> >>> http://uk3.php.net/manual/en/function.date-diff.php >>> >>>> To call the function you need to provide two arguments: $dtTime1 & >>>> $dtTime2 >>>> >>>> To use in a script, you need to first define the function, as per >>>> the example: >>>> >>>> <?php >>>> >>>> function GetDeltaTime($dtTime1, $dtTime2) >>>> { >>>> $nUXDate1 = strtotime($dtTime1->format("Y-m-d H:i:s")); >>>> $nUXDate2 = strtotime($dtTime2->format("Y-m-d H:i:s")); >>>> >>>> $nUXDelta = $nUXDate1 - $nUXDate2; >>>> $strDeltaTime = "" . $nUXDelta/60/60; // sec -> hour >>>> >>>> $nPos = strpos($strDeltaTime, "."); >>>> if (nPos !== false) >>>> $strDeltaTime = substr($strDeltaTime, 0, $nPos + 3); >>>> >>>> return $strDeltaTime; >>>> } >>>> >>>> ?> >>>> >>>> Then you need to call the function like this: >>>> >>>> <?php >>>> GetDeltaTime("time1-goes-here", "time2-goes-here") >>>> ?> >>>> >>>> And it should spit out the difference. >>>> >>>> Code is untested and if you didn't follow that I suggest you read up >>>> on functions: http://www.w3schools.com/php/php_functions.asp >>>> >>>> Hope this helps - I'm probably in a similar situation to you and >>>> have been dabbling with PHP for a few years just as a hobby but >>>> thought I'd try and help out. >>>> You'll learn a lot from reading this list as well. >>>> >>>> Cheers and good luck, >>>> >>>> Tom >>>> >>>> >>>> 2009/6/16 Matthew Croud <matt@xxxxxxxxxxxxxxxxxx> >>>> >>>> Hello, >>>> >>>> My journey of learning PHP is going well, so i've decided to make a >>>> small program which works out the difference between two times and >>>> records the data in a text file. >>>> >>>> I've searched the PHP manual for functions which can help me out, >>>> and I discovered the function Date_diff ( >>>> >>> http://uk3.php.net/manual/en/function.date-diff.php >>> >>>> )and the class DateTime::diff ( >>>> >>> http://uk3.php.net/manual/en/datetime.diff.php >>> >>>> ) >>>> >>>> My question is, how on earth do I use these functions ? I really >>>> don't understand the manual documentation. >>>> >>>> I've just moved onto the subject of classes and so I'm fairly new to >>>> the concept, although I am following it well. >>>> >>>> If someone could explain to me how to use ether of these ( Date_diff >>>> and DateTime::diff ) I would be VERY grateful. >>>> >>>> Thank you so much! >>>> Matt >>>> >>>> -- >>>> PHP General Mailing List (http://www.php.net/) >>>> To unsubscribe, visit: http://www.php.net/unsub.php >>>> >>>> >>>> >>>> >>>> >>> Matthew Croud >>> Studio >>> >>> Obvious Print Solutions Limited >>> Unit 3 Abbeygate Court >>> Stockett Lane >>> Maidstone >>> Kent >>> ME15 0PP >>> >>> T | 0845 094 9704 >>> F | 0845 094 9705 >>> www.obviousprint.com >>> >>> >>> >>> >>> >> >> >> -- >> PHP General Mailing List (http://www.php.net/) >> To unsubscribe, visit: http://www.php.net/unsub.php >> >> > Matthew Croud > Studio > > Obvious Print Solutions Limited > Unit 3 Abbeygate Court > Stockett Lane > Maidstone > Kent > ME15 0PP > > T | 0845 094 9704 > F | 0845 094 9705 > www.obviousprint.com > > > > > > -- Tom Chubb tom@xxxxxxxxxxxx | tomchubb@xxxxxxxxx 07912 202846
