php从特定日期查找周数

Question

我想从特定的开始日期找到特定的周数。例如，从数据库中拖动$ date（即07/08/2011）

我希望这是开始日期，因此从这一天起它将是第3周。这是我到目前为止的代码，但只显示了ISO版本：

    $date = strtotime("".$row['start_date'].""); 
$weekNumber = date("W", $date); 
print $weekNumber;

我用Google搜索了两个小时，但似乎无法找到解决此问题的任何内容！任何帮助都会非常感谢！

Answer 1

获取now和startdate之间的差异，然后除以7天（7 * 86400秒）

<?php
    $startdate = strtotime("".$row['start_date'].""); 
    $enddate = time();

    $time_passed = $enddate - $startdate;

    // if the first day after startdate is in "Week 1" according to your count
    $weekcount_1 = ceil ( $time_passed / (86400*7));

    // if the first day after startdate is in "Week 0" according to your count
    $weekcount_0 = floor ( $time_passed / (86400*7));

?>

Answer 2

您可以直接从db中拖动周数和主日期。 例如，

"SELECT start_date, (WEEK(NOW()) - WEEK(start_date)) as desired_week as week from table";