Question

我打算根据用户进入网站的时间显示四个问候图像。

$morning = "img/morning.png";
$afternoon = "img/afternoon.png";
$evening = "img/evening.png";
$night = "img/night.png";

我有一些条件语句将值分配给$ cover变量。当我测试时，条件语句不起作用。

date_default_timezone_set('Asia/Yangon');
$Hour = date('G');

if($Hour >= 5 && $Hour <= 11) {
    $cover = $morning;
}elseif ($Hour >= 11 && $Hour <= 4) {
    $cover = $afternoon;
}elseif ($Hour >= 4 && $Hour <= 9){
    $cover = $evening;
}elseif ($Hour >= 9 && $Hour <= 4) {
    $cover = $night;
}

图片标签

<img class="card-img-top" src="<?php echo $cover; ?>" alt="Not Available" >

Answer 1

       if($Hour >= 0 && $Hour <= 11) {
          $cover = $morning;
        }
        elseif ($Hour > 11 && $Hour <= 16) {
          $cover = $afternoon;
        }
        elseif ($Hour > 16 && $Hour <= 19){
          $cover = $evening;
        }
        else{
          $cover = $night;
        }

以上代码将检查您从00:00到第二天24:00的时间。我修正了if-else语句，使它们在某种意义上更具时代感。

G的24小时格式，一个小时，前导零从0到23

Answer 2

$hour = date('H', time());

if( $hour > 6 && $hour <= 11) {
 $cover = $morning;
}
else if($hour > 11 && $hour <= 16) {
   $cover = $afternoon;
}
else if($hour > 16 && $hour <= 23) {
   $cover = $evening;
}
else {
   $cover = $night;
}

构造日期实例并从中获取小时

尝试使用PHP

2 个答案: