PHP Parse error: syntax error, unexpected 'Y9gG??' (T_STRING) in /base/data/home/apps/f~streamplate-landingpage-228223/early-access:20190201t232344.41581292385049

runtime: php55
service: early-access
api_version: 1
threadsafe: true

handlers:
- url: /(.+.php)$
script: www/1

- url: /
script: www/index.html

<?php

 if(isset($_POST['email'])){
    $dsn = getenv('MYSQL_DSN');
    $user = getenv('MYSQL_USER');
    $password = getenv('MYSQL_PASSWORD');
    $pdo = new PDO($dsn, $user, $password);

    $email = $_POST['email'];

    $sql = "INSERT INTO emails (`email`) VALUES ('$email')";

    $stmt = $pdo->query($sql);

    header('Location: index.html');
    exit();

    }
?>