URL-safe string encoding:
- function urlsafe_b64encode($string){
- $data = base64_encode($string);
- $data = str_replace(array('+','/','='),array('-','_',''),$data);
- return $data;
- }
copy code
URL-safe string decoding:
- function urlsafe_b64decode($string){
- $data = str_replace(array('-','_'),array('+','/'),$string);
- $mod4 = strlen($data)%4;
- if($mod4){
- $data .= substr('====', $mod4);
- }
- return base64_decode($data);
- }