Base64 Encode and Decode String in PHP

<?php
function base64url_encode
($text){
    $base64 = base64_encode
($text);
    $base64url = strtr($base64, '+/=', '-_,');
    return $base64url;
}
 
function base64url_decode
($text){
    $base64url = strtr($text, '-_,', '+/=');
    $base64 = base64_decode
($base64url);
    return $base64;
}
?>