Answers for "php decode b64 using utf8"

php utf8_decode

// utf8_decode() function is an inbuilt function in PHP which is used
// to decode a UTF-8 string to the ISO-8859-1

$string_to_decode = "Københavns";
utf8_decode($string_to_decode); // returns Københavns

php base64 encode utf8

<a href="print-billing?pid=<?php echo base64_encode($rec['pat_uniq_id']); ?>">Print</a>