How print all the weeks in an year (or first monday of year)

Question

How print all the weeks which start with monday and end with sunday.. like below ..using Zend_date

1   04-Jan-2010-10-Jan-2010  
2   11-Jan-2010-17-Jan-2010 
3   18-Jan-2010-24-Jan-2010 

Answer 1

Start by finding the first monday, then you can just add 1 week until the year increments.

<?php
define('NL', "\n");

$year           = 2010;
$firstDayOfYear = mktime(0, 0, 0, 1, 1, $year);
$nextMonday     = strtotime('monday', $firstDayOfYear);
$nextSunday     = strtotime('sunday', $nextMonday);

while (date('Y', $nextMonday) == $year) {
    echo date('c', $nextMonday), '-', date('c', $nextSunday), NL;

    $nextMonday = strtotime('+1 week', $nextMonday);
    $nextSunday = strtotime('+1 week', $nextSunday);
}

Answer 2

Getting first monday of the year:

$year = 2010;

$date = new Zend_Date();
$date->set("01.01.$year", Zend_Date::DATES);

while(true)
{
   if($date->equals('Mon', Zend_Date::MONTH_NAME_SHORT))
   {
      //It's monday - print date
      break;
   }
   else
   {
       //It's not monday - move to the next day
       $date->add('1', Zend_Date::DAY_SHORT);
   }

}