title: Decrypt SHA256 hash to original string?
body: <p>Is it possible to take an original hash value, and then decode it back to the original string?</p>
  
  <p><code>hash('sha256', $login_password_for_login)</code> gets me a hash, as shown below, but I'd like to go from the hash value back to the original string.</p>
  
  <p>With <code>$login_password_for_login = 12345</code>, the <code>hash</code> function gives me this: 
   <code>5994471abb01112afcc18159f6cc74b4f511b99806da59b3caf5a9c173cacfc5
  </code></p>
  
  <p>I'd like to be able to retrieve the original number or string that I had for the login password.  How do I reverse the hash and get that original string?</p>