Question

我有以下语法，其中填充了一个带有周期的下拉框。它的范围从3个月前到1年不等。

<select id="period" name="period" onchange="updateperioddiv();"  class="tekwani-input-select"> 

        <?php
          for($i = 0; $i <= 445; $i ++){

            $startdate = strtotime("today + $i day - 90 day");
            $enddate = strtotime("today + " . ($i + 6) . " day - 90 day ");

            if(date('D', $startdate) == 'Mon'){

                echo '<option'.' value="'. date('Y-m-d', $startdate) . ' ">' .date('d M y', $startdate) . " to " . date('d M y', $enddate) . "</option>";
            }
          }
        ?> 
   </select>

所以这默认为3个月前，如何才能让默认选择为当前周？

php fiddel here

谢谢，

Answer 1

strtotime（）返回Unix时间戳，它们表示为数字，因此您可以对值进行简单的逻辑比较，以确定今天是否在特定周内。

// Get unix time of today
$today = strtotime("today");

for($i = 0; $i <= 445; $i ++){

    $startdate = strtotime("today + $i day - 90 day");
    $enddate = strtotime("today + " . ($i + 6) . " day - 90 day "); 

    if(date('D', $startdate) == 'Mon'){

        echo '<option ';
        // check to see if today is inside this week
        if( $startdate < $today && $enddate > $today ){
            echo ' selected="selected"';
        }

        echo ' value="'. date('Y-m-d', $startdate) . ' ">' .date('d M y', $startdate) . " to " . date('d M y', $enddate) . "</option>";

    }
}

Answer 2

你可以这样试试 -

<select id="period" name="period" onchange="updateperioddiv();"  class="tekwani-input-select"> 

        <?php
            echo "week".date("Y",$startdate);
          for($i = 0; $i <= 445; $i ++){

            $startdate = strtotime("today + $i day - 90 day");
            $enddate = strtotime("today + " . ($i + 6) . " day - 90 day ");

            if(date('D', $startdate) == 'Mon'){
                $selected = "";
                if(date('W', $startdate) == date('W'))
                   $selected = "selected";
                echo '<option'.' value="'. date('Y-m-d', $startdate) . ' " $selected>' .date('d M y', $startdate) . " to " . date('d M y', $enddate) . "</option>";
            }
          }
        ?> 
   </select>

如何将PHP生成的日期范围默认为当前周

2 个答案: