base64_decode
    (PHP 3, PHP 4, PHP 5)
base64_decode -- Decodes data encoded with MIME base64
Description
string 
base64_decode ( string encoded_data )
   base64_decode() decodes
   encoded_data and returns the original
   data or FALSE on failure. The returned data may be binary.
  
   
Example 1. base64_decode() example 
<?php $str = 'VGhpcyBpcyBhbiBlbmNvZGVkIHN0cmluZw=='; echo base64_decode($str); ?>
 |  
 
     This example will produce:
     This is an encoded string  |  
  | 
  
   See also base64_encode() and
   RFC 2045 section 6.8.