$url_api = 'https://example.com/api?signature='.$signature.'&token='.$token.'&jsfile='.$jsurl.'';
$alishsig = file_get_contents($url_api);header('Content-Type: application/json');
echo $alishsig ;
and output is
{"code":200,"decodedSignature":"768016F1B82C0ECC54BE0629EDB2B52538F01.01AB221ADD7969CEA2FA105BD78DF3294FE6D"}
How to i access only decoded signature like this only
68016F1B82C0ECC54BE0629EDB2B52538F01.01AB221ADD7969CEA2FA105BD78DF3294FE6D