变量不起作用的fsockopen

Question

Am newbie to this, so might be asking a very simple question. Trying to run a simple php program using fsockopen with variables. However it's failing with error:

php_network_getaddresses: getaddrinfo failed: Name or service not known

My code:

$A = 11.22.33.44
$H = sprintf('"%s"', $A);
echo "host 
", $H;
$Y = '1234';
$Z = (int)$Y;
echo "port 
" , $Z;
$fp = fsockopen($H, $Z, $errno, $errstr, 30);

It works fine with hard-coded values like fsockopen("11.22.33.44", 1234, $errno, $errstr, 30). Please suggest the fix.