simple create a .php file and enter below code

include('blockchain.php');
$run = new shell_exec;

get string (decode):

$string=$run->ini_set('blocks',0,0,'chain');

get blocks (encode):

$block=$run->ini_set('string',0,1,'chain');

get block 1 (encode):

$block=$run->ini_set('string',1,1,'chain');

get block 2 (encode):

$block=$run->ini_set('string',2,1,'chain');

'blocks' two type of number , separated by a dot . form the coordinates of the encoded letters in chain

'chain' a combination of characters, numbers, letters that create a chain of network stamp for coding moment

'string' any text you want to encode, no breaks, standard ro 32 string