9.Write a PHP script that receives string as a form input.

    

<h2>PHP Form Validation Example</h2>
<p><span class="error">* required field</span></p>
<form method="post" action="< ?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>"> 

Name: <input type="text" name="name" value=""><br>

E-mail: <input type="text" name="email" value=""><br>

Website: <input type="text" name="website" value="">
<br>
Comment: <textarea name="comment" rows="5" cols="40"></textarea><br>

 <br><br>
  <input type="submit" name="submit" value="Submit"> 
</form>


< ?php

$nameErr = $emailErr  = $websiteErr = "";
$name = $email  = $comment = $website = "";

if ($_SERVER["REQUEST_METHOD"] == "POST") {
  if (empty($_POST["name"])) {
    $nameErr = "Name is required";
  } else {
    $name = test_input($_POST["name"]);
   
    if (!preg_match("/^[a-zA-Z-' ]*$/",$name)) {
      $nameErr = "Only letters and white space allowed";
    }
  }
  
  if (empty($_POST["email"])) {
    $emailErr = "Email is required";
  } else {
    $email = test_input($_POST["email"]);
    
    if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
      $emailErr = "Invalid email format";
    }
  }
    
  if (empty($_POST["website"])) {
    $website = "";
    
  } else {
    $website = test_input($_POST["website"]);
  
    }
  }

  if (empty($_POST["comment"])) {
    $comment = "";
  } else {
    $comment = test_input($_POST["comment"]);
  }

   
}

function test_input($data) {
  $data = trim($data);
  $data = stripslashes($data);
  $data = htmlspecialchars($data);
  return $data;
}
?>





< ?php
echo "<h2>Your Input:</h2>";
echo $name;
echo "<br>";
echo $email;
echo "<br>";
echo $website;
echo "<br>";
echo $comment;
echo "<br>";
echo $gender;
?>

</code>
</pre>

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