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3 months ago
<?php
namespace app\utility;
class Base64Utility
{
/**
* URL base64 decoding
* '-' -> '+'
* '_' -> '/'
* The remainder of the string length %4, supplemented with '='
* @param base64 $string
*/
public static function Decode($string) {
$data = str_replace(array('-','_'),array('+','/'),$string);
$mod4 = strlen($data) % 4;
if ($mod4) {
$data .= substr('====', $mod4);
}
return base64_decode($data);
}
/**
* URL base64 encoding
* '+' -> '-'
* '/' -> '_'
* '=' -> ''
* @param raw $string
*/
public static function Encode($string) {
$data = base64_encode($string);
$data = str_replace(array('+','/','='),array('-','_',''),$data);
return $data;
}
}