add some security to mail script

mail/contact_me.php

@@ -1,19 +1,19 @@
 <?php
 // Check for empty fields
-if(empty($_POST['name'])  		||
-   empty($_POST['email']) 		||
-   empty($_POST['phone']) 		||
-   empty($_POST['message'])	||
+if(empty($_POST['name'])      ||
+   empty($_POST['email'])     ||
+   empty($_POST['phone'])     ||
+   empty($_POST['message'])   ||
    !filter_var($_POST['email'],FILTER_VALIDATE_EMAIL))
    {
-	echo "No arguments Provided!";
-	return false;
+   echo "No arguments Provided!";
+   return false;
    }
    
-$name = $_POST['name'];
-$email_address = $_POST['email'];
-$phone = $_POST['phone'];
-$message = $_POST['message'];
+$name = strip_tags(htmlspecialchars($_POST['name']));
+$email_address = strip_tags(htmlspecialchars($_POST['email']));
+$phone = strip_tags(htmlspecialchars($_POST['phone']));
+$message = strip_tags(htmlspecialchars($_POST['message']));
    
 // Create the email and send the message
 $to = 'yourname@yourdomain.com'; // Add your email address inbetween the '' replacing yourname@yourdomain.com - This is where the form will send a message to.