CODE DATE $nextWeek = time() + (7 * 24 * 60 * 60);

<?php
/*$date=2009-12-8;
for ($i=1; $i<=52; $i++) {
$nextWeek = time() + (7 * 24 * 60 * 60);

                   // 7 days; 24 hours; 60 mins; 60secs
echo 'Now:       '. date('Y-m-d') ."\n";
echo "$i"."/"; 
$daynew=date('$date', $nextWeek);




echo date('1-1-2009',$ts_start); //start date
echo '<br>';
echo date('m-d-Y',$ts_end); //end date

echo 'Next Week: '.  $daynew."\n"; 
echo"</br>";*/

//}
// or using strtotime():
//echo 'Next Week: '. date('Y-m-d', strtotime('+1 week')) ."\n";

$now = time();
$num = date("w");
if ($num == 0)
{ $sub = 6; }
else { $sub = ($num-1); }
$WeekMon  = mktime(0, 0, 0, date("m", $now)  , date("d", $now)-$sub, date("Y", $now));    //monday week begin calculation
$todayh = getdate($WeekMon); //monday week begin reconvert

$d = $todayh[mday];
$m = $todayh[mon];
$y = $todayh[year];
echo "$d-$m-$y"; //getdate converted day


?> 
<?php 
 $weeks_in_year = strftime("%W",strtotime("12/31/2009"));  
echo "$weeks_in_year"; echo "</br>";
?> 
<?php 
function getMondays($year) { 
  $newyear = $year; 
  $week = 0; 
  $day = 0; 
  $mo = 1; 
  $mondays = array(); 
  $i = 1; 
  while ($week != 1) { 
    $day++; 
    $week = date("w", mktime(0, 0, 0, $mo,$day, $year)); 
  } 
  array_push($mondays,date("r", mktime(0, 0, 0, $mo,$day, $year))); 
  while ($newyear == $year) { 
    $test =  strtotime(date("r", mktime(0, 0, 0, $mo,$day, $year)) . "+" . $i . " week"); 
    $i++; 
    if ($year == date("Y",$test)) { 
      array_push($mondays,date("r", $test)); 
    } 
    $newyear = date("Y",$test); 
  } 
  return $mondays; 
} 

$Data=getMondays('2009');
for($i=0; $i<Count($Data); $i++) {
echo $i+1 ," = " , substr("$Data[$i]", 0, -14)   ,"<br>";
}

// print_r(getMondays('2009'));

?>