How can we find days difference in PHP where dates may very from 1/1/1 to 1/1/1000000.
strtotime(), mktime(), date->diff() all these function are not be helpful as it is more then limit of Unix timestamp.
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at least tell the reason for voting it down. – Ritesh Chandora Jul 31 '13 at 13:30
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4Most languages I've come across have a limit on the date range available, you may be best off writing your own algorithm. – Robadob Jul 31 '13 at 13:30
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4Out of pure curiosity, what do you need this for? – h2ooooooo Jul 31 '13 at 13:31
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My first thoughts.. you have to write your own algo.. obviously using bcmath. But hey check this out.. http://stackoverflow.com/a/2184554/1273830 zend! – Prasanth Jul 31 '13 at 13:32
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I am working on some game app. for which I need that kind of function.. – Ritesh Chandora Jul 31 '13 at 13:33
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possible duplicate of [Calculate date difference having a large range with PHP](http://stackoverflow.com/questions/2184506/calculate-date-difference-having-a-large-range-with-php) – Carlos Campderrós Jul 31 '13 at 13:39
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As far as I know, DateTime allows for dates in any periods of time. Even before unix.
Quite possibly it will fial on 1/1/10000000 but that needs testing.
To get the difference, use Diff
$datetime1 = new DateTime('2009-10-11');
$datetime2 = new DateTime('2009-10-13');
$interval = $datetime1->diff($datetime2);
echo $interval->format('%R%a days');
If Diff doesn't work on your ranges, try this https://stackoverflow.com/a/676828/486780 .
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yeah it allowed. but the question is to find out difference between two dates in days. – Ritesh Chandora Jul 31 '13 at 13:36
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Difference is easy. Expanded the answer. Ach, just noticed your point about diff in the question. If diff doesnt work, then you might have to do it manually. – ZorleQ Jul 31 '13 at 13:41
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Have a look at the SO link. That should be able to at least guide you in the right direction. – ZorleQ Jul 31 '13 at 13:56
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DateTime may be able to store the date, but if you're using other helper functions they won't work, as they operate using basic types and not a more structured representation. You're likely going to need to create your own utilities.
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