PHP safe URL string base64 encoding and decoding

If you use the base64_encode and base64_decode methods directly, the generated string may not be suitable for URL addresses. The following method can solve this problem:

URL safe string encoding:

Copy the code The code is as follows:

function urlsafe_b64encode($string) {
$data = base64_encode($string);
$data = str_replace(array('+','/','='),array('-','_',''),$data);
return $data;
}

URL Safe string decoding:

Copy code The code is as follows:

function urlsafe_b64decode($string) {
$data = str_replace(array('-','_'),array('+' ,'/'),$string);
$mod4 = strlen($data) % 4;
if ($mod4) {
$data .= substr('====', $mod4);
}
return base64_decode($data);
}

The above introduces the PHP secure URL string base64 encoding and decoding, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.