functions.php

<?php

if(!defined('INCLUDE_CHECK')) die('You are not allowed to execute this file directly');

function checkEmail($str)
{
	return preg_match("/^[\.A-z0-9_\-\+]+[@][A-z0-9_\-]+([.][A-z0-9_\-]+)+[A-z]{1,4}$/", $str);
}


function send_mail($from,$to,$subject,$body)
{
	$headers = '';
	$headers .= "From: $from\n";
	$headers .= "Reply-to: $from\n";
	$headers .= "Return-Path: $from\n";
	$headers .= "Message-ID: <" . md5(uniqid(time())) . "@" . $_SERVER['SERVER_NAME'] . ">\n";
	$headers .= "MIME-Version: 1.0\n";
	$headers .= "Date: " . date('r', time()) . "\n";

	mail($to,$subject,$body,$headers);
}


function redirect($url) {
    if(!headers_sent()) {
        //If headers not sent yet... then do php redirect
        header('Location: '.$url);
        exit;
    } else {
        //If headers are sent... do javascript redirect... if javascript disabled, do html redirect.
        echo '<script type="text/javascript">';
        echo 'window.location.href="'.$url.'";';
        echo '</script>';
        echo '<noscript>';
        echo '<meta http-equiv="refresh" content="0;url='.$url.'" />';
        echo '</noscript>';
        exit;
    }
}
?>