php base64_decode encoding issue code example

Example 1: base64 decode in php

base64_decode('base64');

Example 2: base64 decode php

<?php 
  
// Program to illustrate base64_decode() 
// function 
$str = 'R0ZHLCBBIGNvbXB1dGVyIFNjaWVuY2UgUG9ydGFsIEZvciBHZWVrcw'; 
echo base64_decode($str). "\n"; 
  
$str = 'MQ=='; 
echo base64_decode($str). "\n"; 
?>