simple email php script that return json for ajax mail scripting

gistfile1.aw

<?php 

function process(){
	$displayForm = true;
	$success = false;
	$error = array();
        // insert a valid email from the domain your sending
	$headers = "From: domain.com <email@domain.com>\r\n";
        // html emails because were bada55
	$headers .= "MIME-Version: 1.0\r\n";
	$headers .= "Content-Type: text/html; charset=ISO-8859-1\r\n";
        
        // just making sure that information is there
	function isValid($val) {
		$value = trim($val);
		if($value === '' || $value === null) {
			return false;
		} else {
			return true;
		}
	};
        
        //our success obj
	function success($num, $msg){
		$result = array(
			'status' => 'success',
			'confirmationNumber' => $num,
			'message' => $msg
			);
		return $result;
	};
  
        // valid email test against a regexp
	function emailValidate($em){
		if(preg_match('/^[a-z0-9A-Z_\+-]+(\.[a-z0-9A-Z_\+-]+)*@[a-z0-9A-Z-]+(\.[a-z0-9A-Z-]+)*\.([a-z]{2,4})$/', $em)){
			return true;
		}else{
			return false;
		}
	};
        
        // our error obj
	function errors($err){

		$result = array(
			'status' => 'errors',
			'message' => $err
		);

		return $result;

	};

	//Test Form Post
	if(!empty($_POST['submit'])){ 


		foreach($_POST as $key => $val):

			//array_push($error, "Testing -> $key : $val");

			// you make conditionals to skip not required fields
			//this skips suffix and title

			if(!isValid($val) and $key !== 'suffix' and $key !== 'title' ):

				array_push($error, $key);

			endif;

		endforeach;

		$valEm = emailValidate($_POST['email']);

		if(!$valEm){array_push($error, 'email');}


		//Results
		if(empty($error)) { 
			$success = true; 
			$displayForm = false;
		
			$head = "<h2>Email Header</h2>";
			// Pull the variables into this body variable
			$body = "<p>Body of infomation</p>";

			$message = $head . $body;
			// In case any of our lines are larger than 70 characters, we should use wordwrap()
			$message = wordwrap($message, 70);
                        // Insert your email address here
   			mail('your@domain.com','New Web Form Submission' , $message  , $headers);

   			return success($confirmation_no, $message);
		        

		}else{
			return errors($error, 'Please fix errors then resubmit');
		} 
	}else{
		array_push($error, 'You have submitted this form in a Bad Method');
		return errors($error);
	}
}
header('Cache-Control: no-cache, must-revalidate');
header('Content-type: application/json');



echo json_encode(process());

?>

removing all referances to emails