send_form_email.php

<?php
if(isset($_POST['email'])) {
    $email_to = "steph.green44@gmail.com"; //YOUR EMAIL
    $email_subject = "New Portfolio Contact"; //YOUR SUBJECT

    function died($error) {
        echo $error."<br /><br />";
        die();
    }

    if(!isset($_POST['name']) ||
    !isset($_POST['email']) ||
    !isset($_POST['message'])) {
        died('We are sorry, but there appears to be a problem with the form you submitted.');
    }

    $first_name = $_POST['name'];
    $email_from = $_POST['email'];
    $comments = $_POST['message'];

    $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 .= '<div class="email-erorr">Please enter a valid email.</div>';
    }
    $string_exp = "/^[A-Za-z .'-]+$/";
    if(!preg_match($string_exp,$first_name)) {
        $error_message .= '<div class="name-erorr">Please enter your name.</div>';
    }
    if(strlen($comments) < 2) {
        $error_message .= '<div class="message-erorr">Please enter a message.</div>';
    }
    if(strlen($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);
    }

    $email_message .= "Name: ".clean_string($first_name)."\n";
    $email_message .= "Email: ".clean_string($email_from)."\n";
    $email_message .= "Comments: ".clean_string($comments)."\n";

    $headers = 'From: '.$email_from."\r\n";
    mail($email_to, $email_subject, $email_message, $headers);
    ?>

    <div class="success_message">Your message was sent.</div>

<?php } ?>