Php Networking Functions

There are many functions in php to convert or look up domain name, IP address,
protocol, and service information.

Domain name/IP address lookups and conversions

• gethostbynamel()
• gethostbyname()
• gethostbyaddr()
• ip2long()
• long2ip()

 Sockets

• fsockopen()
• pfsockopen()
• socket_get_status()
• socket_set_blocking()
• socket_set_timeout()
  
  
  DNS resource records
  
  
  • checkdnsrr()
  • getmxrr()