$hmackey is a value like this “0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF”
and pack(“H*”, $hmackey) is like this , var_dump respon is that a string(64)
“#Eg����#Eg����#Eg����#Eg����#Eg����#Eg����#Eg����#Eg����”
