PHP - Basic Form

send_email.php

<?php
    if(isset($_POST['email'])) {

        // EDIT THE 2 LINES BELOW AS REQUIRED

        $email_to = "you@yourdomain.com";

        $email_subject = "Your email subject line";

        function died($error) {

            // your error code can go here

            echo "We are very sorry, but there were error(s) found with the form you submitted. ";

            echo "These errors appear below.<br /><br />";

            echo $error."<br /><br />";

            echo "Please go back and fix these errors.<br /><br />";

            die();

        }



        // validation expected data exists

        if( !isset( $_POST['first_name'] ) ||

            !isset( $_POST['last_name'] ) ||

            !isset( $_POST['email'] ) ||

            !isset( $_POST['comments'] ) ) {

            died('We are sorry, but there appears to be a problem with the form you submitted.');       

        }



        $first_name = $_POST['first_name']; // required

        $last_name = $_POST['last_name']; // required

        $email_from = $_POST['email']; // required

        $comments = $_POST['comments']; // required

        $error_message = "";

        $email_exp = '/^[A-Za-z0-9._%-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}$/';

      if(!preg_match($email_exp, $email_from)) {

        $error_message .= 'The Email Address you entered does not appear to be valid.<br />';

      }

        $string_exp = "/^[A-Za-z .'-]+$/";

      if(!preg_match($string_exp, $first_name)) {

        $error_message .= 'The First Name you entered does not appear to be valid.<br />';

      }

      if(!preg_match($string_exp, $last_name)) {

        $error_message .= 'The Last Name you entered does not appear to be valid.<br />';

      }

      if(strlen($comments) < 2) {

        $error_message .= 'The Comments you entered do not appear to be valid.<br />';

      }

      if(strlen($error_message) > 0) {

        died($error_message);

      }

        $email_message = "Form details below.\n\n";



        function clean_string($string) {

          $bad = array("content-type","bcc:","to:","cc:","href");

          return str_replace($bad,"",$string);

        }



        $email_message .= "First Name: ".clean_string($first_name)."\n";

        $email_message .= "Last Name: ".clean_string($last_name)."\n";

        $email_message .= "Email: ".clean_string($email_from)."\n";

        $email_message .= "Comments: ".clean_string($comments)."\n";

    // create email headers

    $headers = 'From: '.$email_from."\r\n".

    'Reply-To: '.$email_from."\r\n" .

    'X-Mailer: PHP/' . phpversion();

    @mail($email_to, $email_subject, $email_message, $headers);  

    ?>



    <!-- include your own success html here -->



    Thank you for contacting us. We will be in touch with you very soon.



    <?php

    }
 
?>

Basic HTML Form

Sends HTML form to send_email.php, which sends email on server

<form action="send_email.php" method="post" enctype="text/plain">
  <label for="name">Name:</label>
  <input type="text" name="name" id="name" value="your name">
  <label for="mail">E-mail:</label>
  <input type="text" name="mail" id="mail" value="your email"><br>
  <label for="comment">Comment:</label>
  <textarea id="comment" rows="4" cols="50"></textarea>
  <input type="submit" value="Send">
  <input type="reset" value="Reset">
</form>