PHP - Complete Form - today gyan

This page explains about time real-time form with actions. Below example will take input fields as text, radio button, drop down menu, and checked box.
Example

<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>
It will produce the following result −
PHP – Complete Form

Example

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