这一刻（）让我疯了

Question

I know that this problem is really pitty and i just made a really big mistake what i cannot realise. I want to load an array with dates. I have the starting and the ending dates. Here is my code:

$year_from=2011;
$month_from=1;
$year_till=2012;
$month_till=5;
$array=array();
$year=$year_from;
$month=$month_till;
while($year!=$year_till and $month!=$month_till){
    $array[]=$year.'-'.$month;
    if($month==12){
        $month=1;
        $year=$year+1;
    }else{
        $month=$month+1;
    }
}
print_r($array);

This script's out put will be the following:

Array ( [0] => 2011-1 [1] => 2011-2 [2] => 2011-3 [3] => 2011-4 [4] => 2011-5 [5] => 2011-6 [6] => 2011-7 [7] => 2011-8 [8] => 2011-9 [9] => 2011-10 )

Please help i know it is a really simple task but it's driving me crazy. Any help is greatly appriciated.

EDIT:

Desired output:

Array ( [0] => 2011-1 [1] => 2011-2 [2] => 2011-3 [3] => 2011-4 [4] => 2011-5 [5] => 2011-6 [6] => 2011-7 [7] => 2011-8 [8] => 2011-9 [9] => 2011-10 [10] => 2011-11 [11] => 2011-12 [12] => 2012-1 [13] => 2012-2 [14] => 2012-3 [15] => 2012-4 )

Answer 1

while(!($year==$year_till and $month==$month_till)){
    $array[]=$year.'-'.$month;
    if($month==12){
        $month=1;
        $year=$year+1;
    }else{
        $month=$month+1;
    }
}

The condition is now true while it is false that both the month and the year are equal, which is when you have reached your target date.