OnlinePHP.io - Network

gethostbyaddr - Get the Internet host name corresponding to a given IP address
gethostbyname - Get the IPv4 address corresponding to a given Internet host name
gethostbynamel - Get a list of IPv4 addresses corresponding to a given Internet host name
getmxrr - Get MX records corresponding to a given Internet host name
getservbyname - Get port number associated with an Internet service and protocol
getservbyport - Get Internet service which corresponds to port and protocol
ip2long - Converts a string containing an (IPv4) Internet Protocol dotted address into a long integer
long2ip - Converts an long integer address into a string in (IPv4) Internet standard dotted format