循环计算日期

Question

要求如下： 我们仅在周一、周三和周五交付产品。 如果在下午 5 点之前下订单，则订单将在同一天交付（如果是 MWF），否则订单将在下一个交付日期交付。 订单将分 3 部分交付。第 1 和第 2 产品在第 1 次交货，第 3 和第 4 产品在第 2 次交货，第 5 和第 6 产品在第 3 次交货。 需要用PHP打印当天发货的商品的发货日期

    <?php
date_default_timezone_set('Asia/Kolkata');
//Starting date
$date=date('m/d/Y h:i:s a',time());
//echo $date;
for($i=1;$i<=3;$i++)
{
    echo "Entered in the loop \n";
    $date=calculateDeliveryDate($date);
    if($i==1)
    {
        echo "First delivery date ".$date."\n";
    }
    else
    {
        if($i==2)
        {
            echo "Second delivery date ".$date."\n";
        }
        else
        {
            echo "Third delivery date ".$date."\n";
        }
    }
    $date=date_add(strtotime($date),date_interval_create_from_date_string("1 days"));
}
function calculateDeliveryDate($dt)
{
    echo "Entered the function \n";
    $dayOfTheWeek=date('D',strtotime($dt));
    $timeOfTheWeek=date('H',strtotime($dt));
    //echo $dayOfTheWeek."\n";
    if(($dayOfTheWeek=='Mon' || $dayOfTheWeek=='Wed' || $dayOfTheWeek=='Fri') && $timeOfTheWeek<17)
    {
        return $dt;
    }
    else
    {
        if($dayOfTheWeek=='Mon' || $dayOfTheWeek=='Wed' || $dayOfTheWeek=='Sat')
        {
            $dt=date_add(strtotime($date),date_interval_create_from_date_string("2 days"));
            return $dt;
        }
        else
        {
            if($dayOfTheWeek=='Fri')
            {
                $dt=date_add(strtotime($date),date_interval_create_from_date_string("3 days"));
                return $dt;
            }
            else
            {
                $dt=date_add(strtotime($date),date_interval_create_from_date_string("1 days"));
                return $dt;
            }
        }
    }
}
?>

Answer 1

可能是这样的？祝你好运。

.productLayout {
  background: #CCC;
  margin-bottom: 10px;
}

.sameDayDelivery {
  width: 200px;
  background: green;
}

.nextDayDelivery {
  width: 200px;
  background: crimson;
}

<?php
	
	$orderArray = array(
						array("name" => "product1", "orderDate" => "2017-10-28 09:00:00"), 
						array("name" => "product2", "orderDate" => "2017-10-29 12:30:00"),
						array("name" => "product3", "orderDate" => "2017-10-31 13:26:00"),
						array("name" => "product4", "orderDate" => "2017-11-1 16:49:00"),
						array("name" => "product5", "orderDate" => "2017-11-2 17:00:00"),
            array("name" => "product6", "orderDate" => "2017-11-3 16:59:00")
						);
						
  // LOOP THROUGH DATES
	for($i = 0; $i < count($orderArray); $i++){
        
        $orderDate = date_create_from_format("Y-m-d H:i:s", $orderArray[$i]["orderDate"]);
        
        if(CheckTime($orderDate) == true && CheckDay($orderDate)) {
            PrintLayout($orderArray[$i]["name"], $orderDate, $orderDate, true);
		} else {
            PrintLayout($orderArray[$i]["name"], $orderDate, NextDeliverDate($orderDate), false);
		}
        
	}
    
    // return true if time is before 5:00PM
    function CheckTime($time){
        $d = new DateTime(date_format($time, "Y-m-d")); // returns the time
        $deadline = date_time_set($d, 16, 59, 59); // returns day of week in text
       
        if($time <= $deadline){
            return true;
        } else {
            return false;
        }
    }
    
    // return true if Monday, Wednesday, Friday
    function CheckDay($time){
        
        $day = date_format($time, 'w');
        
        if($day == 1 || $day == 3 || $day == 5){
            return true;
        } else {
            return false;
         }
    }
    
    // return day of the week that the order will be delivered
    function NextDeliverDate($time){
        
        $date = date_format($time, 'w');
        
        $deliveryTime = date_format($time, 'Y-m-d H:i:s');
        
        if($date != 6){
            $d = new DateTime($deliveryTime);
            $d -> modify("+1 day");
            return $d;
        } else {
            $d = new DateTime($deliveryTime);
            $d -> modify("+2 day");
            return $d;
        }
       
    }
    
    // Just a simple layout function to print everything easily.
    function PrintLayout($productName, $orderDate, $deliveryDate, $sameDay){
        
        if($sameDay == true){
            $attentionText = "Same Day";
            $attentionClass = "sameDayDelivery";
        } else {
            $attentionText = "Next Delivery Day";
            $attentionClass = "nextDayDelivery";
        }
        
        
        $orderDay = date_format($orderDate, "Y-m-d"); // returns the time
        $orderDayText = date_format($orderDate, "l"); // returns day of week in text
        $orderTime = date_format($orderDate, "H:i:s"); // returns the time
        
        $deliveryDay = date_format($deliveryDate, "Y-m-d"); // returns the time
        $deliveryDayText = date_format($deliveryDate, "l"); // returns day of week in text
        $deliveryTime = date_format($deliveryDate, "H:i:s"); // returns the time
                
        echo "<div class='productLayout'>
              <h2>Product Name: ".$productName."</h2>
              <div class='".$attentionClass."'>".$attentionText."</div>";
        
        echo "Order Date: [".$orderDay."][".$orderTime."][".$orderDayText."]<br>";
        
        echo "Deliver Date: [".$deliveryDay."][".$deliveryTime."][".$deliveryDayText."]";
        
        echo "</div>";
    }
    

    
    
    
 echo "<br><hr><br>
 The order will be delivered in 3 parts. <br>
 1st and 2nd products on 1st delivery<br>
 3rd and 4th product on the 2nd delivery<br>
 5th and 6th on 3rd delivery.<br>
<br>
 Need to print the delivery dates with the products to be delivered on that day using PHP
 ";
 
?>