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Nov 29th, 2008

Getting Future Date

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I don't know how to explain this correctly but just some sample for you guys so that you can really get what Im trying to say.

Today is November 28, 2008

3 days from now is December 1,2008

Im looking for a php code, which can give me the exact date giving the number of days interval prior to the current date.

I've been looking for a thread which can solve or even give a hint on how to solve this one but I found none.

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xarz

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Nov 29th, 2008

Re: Getting Future Date

Is it so difficult to use google with keywords search php+get+date+future.
From what I got from this search even me with no interest in PHP could make that part of the code work...

peter_budo

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Nov 29th, 2008

Re: Getting Future Date

I have created a script for you to fiddle with and is below. The below script is a function where you can enter the number of days, months and years untill the future date and the function will return what that date is.

php Syntax (Toggle Plain Text)
<?
function count_to_date($day,$month,$year)
    {
    $d=date(j)+$day;
    $m=date(n)+$month;
    $y=date(Y)+$year;
    if ($d>31)
        {
        while ($d>31)
            {
            $d-=31;
            $m+=1;
            }
        }
    if ($m>12)
        {
        while ($m>12)
            {
            $m-=12;
            $y+=1;
            }
        }
    //below sets sequence: day/month/year
    $r=$d.'/'.$m.'/'.$y;
    return $r;
    }
 
 
//below returns a future date (day/month/year)  
echo count_to_date(3,0,0);
 
//a bit of theory
//count_to_date(number_of_days,number_of_months,number_of_years);
?>
<?
function count_to_date($day,$month,$year)
    {
    $d=date(j)+$day;
    $m=date(n)+$month;
    $y=date(Y)+$year;
    if ($d>31)
        {
        while ($d>31)
            {
            $d-=31;
            $m+=1;
            }
        }
    if ($m>12)
        {
        while ($m>12)
            {
            $m-=12;
            $y+=1;
            }
        }
    //below sets sequence: day/month/year
    $r=$d.'/'.$m.'/'.$y;
    return $r;
    }


//below returns a future date (day/month/year)  
echo count_to_date(3,0,0);

//a bit of theory
//count_to_date(number_of_days,number_of_months,number_of_years);
?>

cwarn23

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Dec 1st, 2008

Re: Getting Future Date

@cwarn23

great! thanks alot for the code..
i haven't tried it yet.. but will let you know if there are any problems with it..

xarz

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Dec 2nd, 2008

Re: Getting Future Date

Hi I really doubt whether this piece of code will work for every date.. It might not work with february date, leap years, and for months with months with 30 days like april..

Im providing you with some other code sample, that can work for most of the cases...

PHP Syntax (Toggle Plain Text)
<?php
function count_to_date($curr_day,$curr_month,$curr_yr,$day,$month,$year)
    {
    $d=$curr_day+$day;
    $m=$curr_month+$month;
    $y=$curr_yr+$year;
    if ($m>12)
        {
            $m-=12;
            $y+=1;
        }
 
	$no_of_days=get_days_in_month($m,$y);
	if ($d>$no_of_days)
        {
            $d-=$no_of_days;
            $m+=1;
        }
 
    //below sets sequence: day/month/year
    $r=$d.'/'.$m.'/'.$y;
    return $r;
    }
 
function leap_year($yr)
{
	if($yr%4==0 || $yr%400==0)
		return true;
	else
		return false;
}
function get_days_in_month($mnth_no,$yr)
{
	switch($mnth_no)
	{
		case 1:
		case 3:
		case 5:
		case 8:
		case 10:
		case 12:return 31;
		break;
 
		case 4:
		case 6:
		case 9:
		case 11:return 30;
		break;
 
		case 2:if(leap_year($yr))
					return 29;
				else
					return 28;
		break;
	}
}
 
//below returns a future date (day/month/year)  
echo count_to_date(30,3,2007,1,0,1);
 
//a bit of theory
//count_to_date(number_of_days,number_of_months,number_of_years);
?>
<?php
function count_to_date($curr_day,$curr_month,$curr_yr,$day,$month,$year)
    {
    $d=$curr_day+$day;
    $m=$curr_month+$month;
    $y=$curr_yr+$year;
    if ($m>12)
        {
            $m-=12;
            $y+=1;
        }
	
	$no_of_days=get_days_in_month($m,$y);
	if ($d>$no_of_days)
        {
            $d-=$no_of_days;
            $m+=1;
        }
    
    //below sets sequence: day/month/year
    $r=$d.'/'.$m.'/'.$y;
    return $r;
    }

function leap_year($yr)
{
	if($yr%4==0 || $yr%400==0)
		return true;
	else
		return false;
}
function get_days_in_month($mnth_no,$yr)
{
	switch($mnth_no)
	{
		case 1:
		case 3:
		case 5:
		case 8:
		case 10:
		case 12:return 31;
		break;
		
		case 4:
		case 6:
		case 9:
		case 11:return 30;
		break;
		
		case 2:if(leap_year($yr))
					return 29;
				else
					return 28;
		break;
	}
}
		
//below returns a future date (day/month/year)  
echo count_to_date(30,3,2007,1,0,1);

//a bit of theory
//count_to_date(number_of_days,number_of_months,number_of_years);
?>

sikka_varun

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Dec 2nd, 2008

Re: Getting Future Date

sikka_varun and cwarn23

thanks alot for the codes..

I make some modifications to fit my need from your work guys.
basically the changes are adding a parameter so that I can choose what date I want to start counting off.
Here is the outcome:

php Syntax (Toggle Plain Text)
function count_to_date($sqldate,$day,$month,$year)
{
	$d=substr($sqldate,8,2);
	$m=substr($sqldate,5,2);
	$y=substr($sqldate,0,4);
	$h=substr($sqldate,11,2);
	$min=substr($sqldate,14,2);
 
    $d=intval($d)+$day;
    $m=intval($m)+$month;
    $y=intval($y)+$year;
    if ($d>31)
        {
        while ($d>31)
            {
            $d-=31;
            $m+=1;
            }
        }
    if ($m>12)
        {
        while ($m>12)
            {
            $m-=12;
            $y+=1;
            }
        }
    //below sets sequence: day/month/year
	if($d<10) $d='0'.$d;
	if($m<10) $m='0'.$m;
    $r=$y.'-'.$m.'-'.$d.' '.$h.':'.$min.':00';
    return $r;
}
function count_to_date($sqldate,$day,$month,$year)
{
	$d=substr($sqldate,8,2);
	$m=substr($sqldate,5,2);
	$y=substr($sqldate,0,4);
	$h=substr($sqldate,11,2);
	$min=substr($sqldate,14,2);
	
    $d=intval($d)+$day;
    $m=intval($m)+$month;
    $y=intval($y)+$year;
    if ($d>31)
        {
        while ($d>31)
            {
            $d-=31;
            $m+=1;
            }
        }
    if ($m>12)
        {
        while ($m>12)
            {
            $m-=12;
            $y+=1;
            }
        }
    //below sets sequence: day/month/year
	if($d<10) $d='0'.$d;
	if($m<10) $m='0'.$m;
    $r=$y.'-'.$m.'-'.$d.' '.$h.':'.$min.':00';
    return $r;
}

can be called by

PHP Syntax (Toggle Plain Text)
echo count_to_date("2007-07-01 06:00:00",5,0,0);
echo count_to_date("2007-07-01 06:00:00",5,0,0);

and the output will be
2007-07-06 06:00:00

anyways,thanks alot for the suggestions and the sample code.. i really appreciate it.

Last edited by xarz; Dec 2nd, 2008 at 10:29 pm.

xarz

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Dec 9th, 2009