Warning: main() [function.main]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'UTC' for '8.0/no DST' instead in C:\wamp\www\wework\callback\callbackverify.php on line 15

Notice: Undefined index: msg_signature in C:\wamp\www\wework\callback\callbackverify.php on line 15

Warning: main() [function.main]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'UTC' for '8.0/no DST' instead in C:\wamp\www\wework\callback\callbackverify.php on line 16

Notice: Undefined index: timestamp in C:\wamp\www\wework\callback\callbackverify.php on line 16

Warning: main() [function.main]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'UTC' for '8.0/no DST' instead in C:\wamp\www\wework\callback\callbackverify.php on line 17

Notice: Undefined index: nonce in C:\wamp\www\wework\callback\callbackverify.php on line 17

Warning: main() [function.main]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'UTC' for '8.0/no DST' instead in C:\wamp\www\wework\callback\callbackverify.php on line 18

Notice: Undefined index: echostr in C:\wamp\www\wework\callback\callbackverify.php on line 18
ERR: -40001