PHP - Mẫu hoàn chỉnh

Trang này giải thích về biểu mẫu thời gian thực với các hành động. Ví dụ dưới đây sẽ lấy các trường nhập dưới dạng văn bản, nút radio, menu thả xuống và hộp kiểm.

Thí dụ

<html>
   
   <head>
      <style>
         .error {color: #FF0000;}
      </style>
   </head>
   
   <body> 
      <?php
         // define variables and set to empty values
         $nameErr = $emailErr = $genderErr = $websiteErr = "";
         $name = $email = $gender = $class = $course = $subject = "";
         
         if ($_SERVER["REQUEST_METHOD"] == "POST") {
            if (empty($_POST["name"])) {
               $nameErr = "Name is required";
            }else {
               $name = test_input($_POST["name"]);
            }
            
            if (empty($_POST["email"])) {
               $emailErr = "Email is required";
            }else {
               $email = test_input($_POST["email"]);
               
               // check if e-mail address is well-formed
               if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
                  $emailErr = "Invalid email format"; 
               }
            }
            
            if (empty($_POST["course"])) {
               $course = "";
            }else {
               $course = test_input($_POST["course"]);
            }
            
            if (empty($_POST["class"])) {
               $class = "";
            }else {
               $class = test_input($_POST["class"]);
            }
            
            if (empty($_POST["gender"])) {
               $genderErr = "Gender is required";
            }else {
               $gender = test_input($_POST["gender"]);
            }
            
            if (empty($_POST["subject"])) {
               $subjectErr = "You must select 1 or more";
            }else {
               $subject = $_POST["subject"];	
            }
         }
         
         function test_input($data) {
            $data = trim($data);
            $data = stripslashes($data);
            $data = htmlspecialchars($data);
            return $data;
         }
      ?>
		
      <h2>Absolute classes registration</h2>
      
      <p><span class = "error">* required field.</span></p>
      
      <form method = "POST" action = "<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
         <table>
            <tr>
               <td>Name:</td>
               <td><input type = "text" name = "name">
                  <span class = "error">* <?php echo $nameErr;?></span>
               </td>
            </tr>
            
            <tr>
               <td>E-mail: </td>
               <td><input type = "text" name = "email">
                  <span class = "error">* <?php echo $emailErr;?></span>
               </td>
            </tr>
            
            <tr>
               <td>Time:</td>
               <td> <input type = "text" name = "course">
                  <span class = "error"><?php echo $websiteErr;?></span>
               </td>
            </tr>
            
            <tr>
               <td>Classes:</td>
               <td> <textarea name = "class" rows = "5" cols = "40"></textarea></td>
            </tr>
            
            <tr>
               <td>Gender:</td>
               <td>
                  <input type = "radio" name = "gender" value = "female">Female
                  <input type = "radio" name = "gender" value = "male">Male
                  <span class = "error">* <?php echo $genderErr;?></span>
               </td>
            </tr>
            
            <tr>
               <td>Select:</td>
               <td>
                  <select name = "subject[]" size = "4" multiple>
                     <option value = "Android">Android</option>
                     <option value = "Java">Java</option>
                     <option value = "C#">C#</option>
                     <option value = "Data Base">Data Base</option>
                     <option value = "Hadoop">Hadoop</option>
                     <option value = "VB script">VB script</option>
                  </select>
               </td>
            </tr>
            
            <tr>
               <td>Agree</td>
               <td><input type = "checkbox" name = "checked" value = "1"></td>
               <?php if(!isset($_POST['checked'])){ ?>
               <span class = "error">* <?php echo "You must agree to terms";?></span>
               <?php } ?> 
            </tr>
            
            <tr>
               <td>
                  <input type = "submit" name = "submit" value = "Submit"> 
               </td>
            </tr>
            
         </table>
      </form>
      
      <?php
         echo "<h2>Your given values are as :</h2>";
         echo ("<p>Your name is $name</p>");
         echo ("<p> your email address is $email</p>");
         echo ("<p>Your class time at $course</p>");
         echo ("<p>your class info $class </p>");
         echo ("<p>your gender is $gender</p>");
         
         for($i = 0; $i < count($subject); $i++) {
            echo($subject[$i] . " ");
         }
      ?>
      
   </body>
</html>

Nó sẽ tạo ra kết quả sau: