contactprocess.php

<?php
include("/config.php");

if(!$_POST) exit;

$email = $_POST['Email_Address'];
$error ="";
$errors ="";

if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
    $error.="Invalid email address entered!";
    $errors=1;
}

if($errors==1) echo $error;
else{
    $values = array ('Full_Name','Email_Address','Your_Message');
    $required = array('Full_Name','Email_Address','Your_Message');


    $email_subject = "New Message From Your Social Website";
    $email_content = "new message:\n";

    foreach($values as $key => $value){
      if(in_array($value,$required)){
        if ($key != 'subject' && $key != 'company') {
          if( empty($_POST[$value]) ) { echo 'PLEASE FILL IN REQUIRED FIELDS'; exit; }
        }
        $email_content .= $value.': '.$_POST[$value]."\n";
      }
    }

    if(@mail($email,$email_subject,$email_content)) {
        echo 'Message sent!';
    } else {
        echo 'ERROR!';
    }
}
?>