Decrypted code level 1:

$decoded = str_rot13(gzinflate(base64_decode('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')));
 if (hash('sha256', $decoded) !== '82382693c922c45d85f2b3c46f819a4ec08e85e74d019f6d1b5d41ee1ef07e13') die('Tampered');
 eval($decoded);

Decrypted code level 2:

$decoded = str_rot13(gzinflate(base64_decode('nZBtS8MwEMe/yjkKS2nF9GHtbK0ijPn8QnQTFJEV2q7bSJurbVdk391kxU1wTvBNIHf5/353UZa4gAAyFqNjv3HMQ46k6/TrOh1z23Hr2yRbDI+sUCse7u6T0fOjiU9Xx5MxxeH8vLZmQVf1QanSnxB6OXbdm95Ac8KMpWmfWxcD9z1oA3HCEhQZ6sOsrBoEkkRTVOED4lmV5CWQ9oms5IIL1APMyxAAOiNsmlCH6zBq+EEHvtEMH7II2dKHqgBSsCZeA5S56EVswomhg0GFf41S5j6sWrrhwdnplmPu5siLHBOCIIBNlVdIVEn6Ytk9y9vn3GgOt/O2ScMyPSjCSGxfBVT+68n61DQhWu0Jmi79p7Jvi+Qfi/2eprZclUWRaL4Yuqlbrz7E5bQoGiSyru50cyzYtEm89kpMaVl9Ag==')));
 if (hash('sha256', $decoded) !== '82f4b95a7c98db21b3c32a609973e548b3f375a688dafa71d00fb5c9203aec12') die('Tampered');
 eval($decoded);

Decrypted code level 3:

$key = base64_decode('68jjvId467jYtbyS/3o+fFZDtHMG2eJV9nI0eSxNj3w=');
 $iv = base64_decode('0UI77X5Q+6obavv8d3TQ7g==');
 $state = 0;
	 while (true) {
		 switch ($state) {
		 case 0: echo   "Hello, World!" ;
		 $state = 1;
		 break;
			 if (false) {
			 $x = rand(1, 10);
			 echo $x;
			 
		}
		 case 1: $state = 2;
		 break;
			 if (false) {
				 if (true === false) {
				 die();
				 
			}
			 
		}
		 case 1453: $x = rand(1, 10);
		 echo $x;
		 $state = -1;
		 break;
		 case 1132: for ($i=0;
		 $i<0;
			 $i++) {
		}
		 $state = -1;
		 break;
		 case 1270: $x = rand(1, 10);
		 echo $x;
		 $state = -1;
		 break;
			 case 1840: if (true === false) {
			 die();
			 
		}
		 $state = -1;
		 break;
		 case 1043: $arr = [1,2,3];
		 shuffle($arr);
		 $state = -1;
		 break;
		default: break(2);
		 
	}
}

$key = 㼇xصz>|VCsUr4y,M|;
 $iv = B;
~Pjwt;
 $state = 0;
	 while (true) {
		 switch ($state) {
		 case 0: echo   "Hello, World!" ;
		 $state = 1;
		 break;
			 if (false) {
			 $x = rand(1, 10);
			 echo $x;
			 
		}
		 case 1: $state = 2;
		 break;
			 if (false) {
				 if (true === false) {
				 die();
				 
			}
			 
		}
		 case 1453: $x = rand(1, 10);
		 echo $x;
		 $state = -1;
		 break;
		 case 1132: for ($i=0;
		 $i<0;
			 $i++) {
		}
		 $state = -1;
		 break;
		 case 1270: $x = rand(1, 10);
		 echo $x;
		 $state = -1;
		 break;
			 case 1840: if (true === false) {
			 die();
			 
		}
		 $state = -1;
		 break;
		 case 1043: $arr = [1,2,3];
		 shuffle($arr);
		 $state = -1;
		 break;
		default: break(2);
		 
	}
}