(PHP 4, PHP 5, PHP 7)
base64_decode — Decodes data encoded with MIME base64
$data
   [, bool $strict = FALSE
  ] ) : string
   Decodes a base64 encoded data.
  
dataThe encoded data.
strict
       If the strict parameter is set to TRUE
       then the base64_decode() function will return
       FALSE if the input contains character from outside the base64
       alphabet. Otherwise invalid characters will be silently discarded.
      
   Returns the decoded data or FALSE on failure. The returned data may be
   binary.
  
| Version | Description | 
|---|---|
| 5.2.0 | strictadded | 
Example #1 base64_decode() example
<?php
$str = 'VGhpcyBpcyBhbiBlbmNvZGVkIHN0cmluZw==';
echo base64_decode($str);
?>
The above example will output:
This is an encoded string