i have some code that works totally fine at my localhost server but as soon as i upload it to the web it doesn't work..

    // $errors = [];

    if ( isset($_SESSION['token']) && $_POST['token'] == $_SESSION['token'] ) {

        $email  = clean($_POST['user_email']);
        $email  = escape($email);

        $token  = clean($_SESSION['token']);
        $token  = escape($token);

        if (!email_exists($email) ) {

            $errors[] = "Sorry, email you provided is not registered in our system.";

        } else if ( email_exists($email) ) {

            //-- Check if account is active or not -- //

            $_sql    = "SELECT user_id, active FROM users WHERE user_email='$email'";
            $_result = query($_sql);

            confirm($_result);
            row_count($_result);

            $_row    = fetch_array($_result);
            $active  = $_row['active'];


            if( $active == 0 ) {

                $message = info_message("Account status inactive, Please activate your account first.");
                set_message($message);                  
                redirect('index.php');

            } else if( $active == 1 ) {             

                // -- security code -- //

                $validation_code = md5($email + microtime()); 

                // -- setting a time limited cookie( 3 minutes) -- //

                setcookie('temp_access_code', $validation_code, time());

                $validation_code = md5($email, microtime());

                setcookie('temp_access_code', $validation_code, time()+60);

                $sql     = "UPDATE users SET validation_code='$validation_code' WHERE user_email ='$email'";
                $result  =  query($sql);                    
                confirm($result);

                $mail = new PHPMailer();
                $mail->IsSMTP();
                $mail->Mailer = "smtp.gmail.com";
                $mail->Host = "ssl://smtp.gmail.com"; 
                $mail->Port = "465";
                $mail->SMTPAuth = true;
                $mail->SMTPSecure = 'ssl';
                $mail->Username = "mikster340";
                $mail->Password = "Ifsomeofyounoticedihadmyrealpasswordinthereitschangednow123";

                $mail->From     = "noreply@zestymemes.com";
                $mail->FromName = "admin@zestymemes.com";
                $mail->AddAddress("mikster3420@gmail.com");
                $mail->AddReplyTo($email);

                $mail->Subject  = "Hi! Reset your password at zestymemes.com";
                $mail->Body     = "You requested a password reset from your email {$email}, press on the link below to reset your password and insert this validation code {$validation_code}!
                http://www.dellongcompany.com/login/code.php?email=$email&code=$validation_code";
                $mail->WordWrap = 50;  

                if(!$mail->Send()) {
                    echo 'Message was not sent.';
                    echo 'Mailer error: ' . $mail->ErrorInfo;
                    exit;
            } else {
                    echo 'Message has been sent.';
            }   

            if (!empty($errors) ) {

                    foreach ( $errors as $error ) {

                        echo validation_error_message($error);
                    }
                }

            } else { 
                validation_error_message("Sorry, your session expired");
                redirect('index.php'); 
            }   // -- if the token is not the same  redirect the user  to home page --// 
                    // End Token checks
    }

    }
 }