在php中的两个日期之间获取周数

I want to get the week numbers for given two dates i.e from 2012-01-01 to 2012-12-31.The week numbers should fall exactly in the range as specified above.Can u please give suggestions for doing this.

Something like this should work fine:

<?php
    $startDateUnix = strtotime('2012-01-01');
    $endDateUnix = strtotime('2013-01-01');

    $currentDateUnix = $startDateUnix;

    $weekNumbers = array();
    while ($currentDateUnix < $endDateUnix) {
        $weekNumbers[] = date('W', $currentDateUnix);
        $currentDateUnix = strtotime('+1 week', $currentDateUnix);
    }

    print_r($weekNumbers);
?>

DEMO.

Output:

Array
(
    [0] => 52
    [1] => 01
    [2] => 02
    .........
    [51] => 51
    [52] => 52
)

Do something like this:

[REMOVED]

EDIT

<?php

for($w = strtotime($start_date); $w <= strtotime($end_date); $w += 7 * 24 * 3600)
{
echo date("W", $w) . '<br />';
}

?>

Something like this should do the job:

$start = '2012-01-01';
$end = '2012-12-31';

$dates = range(strtotime($start), strtotime($end),604800);
$weeks = array_map(function($v){return date('W', $v);}, $dates); // Requires PHP 5.3+

print_r($weeks);

I think you want something like this using DateTime:

$first_date = new DateTime();
$last_date  = new DateTime('-50 weeks');
$days_array = array();
foreach(new DatePeriod($first_date, new DateInterval('P1D'), $last_date) as $date) {
  $days_array[] = $date->format('W');
}

You can get the number of weeks between two dates using the weeks_between_dates() function below.

function weeks_between_dates($d1,$d2)
{
    $t1 = strtotime($d1);
    $t2 = strtotime($d2);
    $out = array();
    while ($now <= $t2) {
        $out[] = date('W', $t1);
        $t1 = strtotime('+1 week', $t1);
    }
    return $out;
}

print_r( weeks_between_dates('2015-01-01','2015-12-31') ); // 01..53
print_r( weeks_between_dates('2016-01-01','2016-12-31') ); // 01..52