How can the safe_b64encode and safe_b64decode functions be adapted for use with openssl instead of mcrypt in PHP?

The safe_b64encode and safe_b64decode functions can be adapted for use with openssl instead of mcrypt in PHP by using base64_encode and base64_decode functions provided by PHP's openssl extension. This allows for encoding and decoding data in a safe manner without relying on mcrypt functions which are deprecated. 

function safe_b64encode($input) {
    return str_replace('=', '', strtr(base64_encode($input), '+/', '-_'));
}

function safe_b64decode($input) {
    return base64_decode(strtr($input, '-_', '+/'));
}

Keywords

safe_b64encode safe_b64decode openssl mcrypt PHP

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