PHP number of days from present to a specific month [duplicate] - php

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Possible Duplicate:
Calculate number of days between two given dates
Is there a way to calculate the number of days between the current date and a specific month?
For example if the current date is March 25th 2011 and I want PHP to calculate the days between now and September 5th 2010.
Is there a function available for this?
EDIT
Also, I would like the year to be dynamic (so I don't have to define it) - so if the present date is September 20th 2010 it knows to count the same year - whilst if it's January 7th 2009 it knows that it needs to calculate the number of days between Jan 7th 2009 and September 5th 2008.

Answer 1

Your edit makes the question more interesting: how to find days since the nearest past September 5th. Here is one of many approaches:
$input=$argv[1]; //"now" for now.
$base=strtotime($input);
$t=strtotime("September 5"); //Defaults to current year
while(true){
echo "t=".date("Y-m-d",$t)."\n";
$diff=$base-$t;
if($diff>=0)break;
//If diff is -ve, $t is still in future, so go back one year
$t=strtotime("-1 year",$t);
}
echo "Sep 5th is ".floor($diff/86400)." days before $input.\n";
It is a commandline script, so you can test it like this:php test.php now gives "Sep 5th is 98 days before now." while php test.php 2000-01-01 gives "Sep 5th is 118 days before 2000-01-01."
It does not support future dates though: php test.php 2020-12-31 gives "Sep 5th is 3405 days before 2020-12-31."