https://www.php.net/manual/it/function.gethostbyaddr.php
PHP: gethostbyaddr - Manual
Ottiene l'host Internet corrispondente a un dato indirizzo IP
phpgethostbyaddrmanual
https://sourceware.org/pipermail/cygwin-patches/2001q3/001088.html
gethostbyname/gethostbyaddr patch
gethostbynamegethostbyaddrpatch
https://www.w3schools.com/PhP/func_network_gethostbyaddr.asp
PHP gethostbyaddr() Function
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML...
phpgethostbyaddrfunction
https://sourceware.org/pipermail/cygwin-patches/2001q3/001090.html
gethostbyname/gethostbyaddr patch
gethostbynamegethostbyaddrpatch