title: PHP Base64 encode with salt string
body: <p>How can I encode string using <code>PHP Base64_encode</code> function with passing some <code>Salt String</code></p>
  
  <p>I don't want others to hack my string. If some one is having little knowledge in php, he can easily hack if I directly encode string. Because this is the only function allow you to decode encoded content. As far as I know.</p>
  
  <p>In the tutorials I see above function will accept only one parameter. </p>
  
  <p>Any Help ?</p>