Help with next/prevous month & year

[Mr Chris]

Hi

 

I'm hoping someone can advise me please.

 

Say I have a month and a year set to variables (no day) called via $_GET from a URL string

 

/?year=2008&month=12

$year = $_GET['year']; // 2008
$month = $_GET['month']; // EG (12) So = December

 

How can I write a html link dynamically depending on the values of $_GET which goes back a month and also goes forward a month with years also changing depending on the month of the year?

 

So for example on my page my link for next month (in this instance) would be:

 

<a href=2009/01>Next Month</a>

 

and the previous month

 

<a href=2008/11>Previous Month</a>

 

Thanks in advance

 

[mikesta707]

last month and next month

echo $nextMonth = date("F", strtotime("last month"));
  echo "<br />";
  echo $prevMonth = date("F", strtotime("next month"));

outputs:

January
March

 

if you want years, just do

  echo $nextMonth = date("Y", strtotime("last year"));
  echo "<br />";
  echo $prevMonth = date("Y", strtotime("next year"));

 

which outputs

2009
2011

 

check out the manual page for the date for different formats of the date, and strtotime for more info on strtotime function[/code]

[jl5501]

$lastmonth = strftime("%Y/%m",strtotime(' -1 month');

$nextmonth = strftime("%Y/%m",strtotime(' +1 month');

[Mr Chris]

Thanks Guys,

 

One problem with that though the next month and year need to be created through variables with values assigned to then, which is where I was getting it wrong e.g:

 

<?php 

$the_month = 09; //Set as August
$the_year = 1999; //Set as 1999

?> 

 

So I was hoping to do something like this:

 

<?php 

$the_month = 09; //Set as August
$the_year = 1999; //Set as 1999

echo $lastMonth = date("".$the_month."", strtotime("-1 month")); //Would be 08
echo "<br />";  
echo $nextMonth = date("".$the_month."", strtotime("+1 month")); //Would be 10
echo "<br />";  
echo $lastYear = date("".$the_year."", strtotime("-1 year")); //Would be 1998
echo "<br />";  
echo $nextYear = date("".$the_year."", strtotime("+1 year")); //Would be 2000
?> 

 

Thanks

[sasa]

<?php 

$the_month = '12'; //Set as August
$the_year = '1999'; //Set as 1999

$temp = $the_month+1;
$the_next_month = str_pad($temp>12 ? $temp-12 : $temp,2,'0',0);
$the_next_year = $temp>12 ? $the_year+1 : $the_year;
echo $the_next_month,'-',$the_next_year;
?>