我如何從無線電輸入中獲得答案？

Question

首先，我對PHP完全陌生，以前只做過一點HTML/CSS，所以我對這個東西不太瞭解。

我已經在學校接受任務;要創造一些用途：

1. 回聲
2. HTML和PHP
3. 變量在PHP
組合
4. 輸入

我一直在試圖讓一個頁面，在這裏你選擇今天是哪一天，然後按確定，將出現一條消息，文字爲：「今天是今天，因此在星期五前有X天。」

我到目前爲止所做的：

<p> 
     Temporary description with HTML <?php echo "<p> and PHP. </p>" ?> 
    </p> 

    <?php 


     $ledestreng1; 
     $ledestreng2; 
     $ledestreng3; 

     $ledestreng1 = "Today is "; 
     $ledestreng2 = " There is therefore "; 
     $ledestreng3 = " days until friday." 



    ?> 



    <form> 
     <input type="radio" name="day" value="monday"> Monday<br> 
     <input type="radio" name="day" value="tuesday"> Tuesday<br> 
     <input type="radio" name="day" value="wednesday"> Wednesday<br> 
     <input type="radio" name="day" value="thursday"> Thursday<br> 
     <input type="radio" name="day" value="friday"> Friday<br> 
     <input type="radio" name="day" value="saturday"> Saturday<br> 
     <input type="radio" name="day" value="sunday"> Sunday<br> 
     <input type="submit" name="submit" value="OK"> 
    </form> 

    <?php 
     if (isset($_POST[submit])){ 
     $today = $_POST[day]; 
     echo "<p>$ledestreng1 $today,$ledestreng2,$ledestreng3</p>"; 
     }  
     ?> 

我該從這裏做什麼？如何獲得從收音機輸入中選擇的一天，以及如何才能說出到週五有多少天？我認爲if語句會起作用，比如「如果」星期四「被選中，直到星期五纔有」3「天。」

你對我如何做到這一點有任何建議嗎？

Answer 1

HTML

<form method="POST"> 
    <input type="radio" name="day" value="monday"> Monday<br> 
    <input type="radio" name="day" value="tuesday"> Tuesday<br> 
    <input type="radio" name="day" value="wednesday"> Wednesday<br> 
    <input type="radio" name="day" value="thursday"> Thursday<br> 
    <input type="radio" name="day" value="friday"> Friday<br> 
    <input type="radio" name="day" value="saturday"> Saturday<br> 
    <input type="radio" name="day" value="sunday"> Sunday<br> 
    <input type="submit" name="submit" value="OK"> 
</form> 

PHP

<?php 
if(isset($_POST['submit'])) { 
    $day = $_POST['day']; 

    if($day == "saturday") { 
     echo "6 days untill it's friday"; 
    } elseif($day == "sunday") { 
     echo "5 days untill it's friday"; 
    } elseif($day == "monday") { 
     echo "4 days untill it's friday"; 
    } elseif($day == "tuesday") { 
     echo "3 days untill it's friday"; 
    } elseif($day == "wednesday") { 
     echo "2 days untill it's friday"; 
    } elseif($day == "thursday") { 
     echo "1 days untill it's friday"; 
    } elseif($day == "friday") { 
     echo "Today friday"; 
    } 
} 
?>