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- Synopsis:
- $iptoname(<ip address>)
- $nametoip(<hostname>)
-
- Technical:
- These functions are used to convert an IP address to a hostname, and vice
- versa. The $iptoname() function returns the hostname associated with
- the given IP address, and $nametoip() does the opposite.
-
- Practical:
- These functions are used to convert between IP addresses and Internet
- hostnames. Obvious reasons aside, they are mostly useful when you know
- which of the two the input will be. They return nothing if the address
- could not be converted, or if the input was invalid. The $convert()
- function should be used if the input is known to vary.
-
- Returns:
- iptoname: hostname for the given IP address
- nametoip: IP address for the given hostname
-
- Examples:
- $iptoname(127.0.0.1) probably returns "localhost"
- $nametoip(localhost) probably returns "127.0.0.1"
- $iptoname(localhost) error, input is not an IP address
- $nametoip(127.0.0.1) error, input is not a hostname
-
- See Also:
- convert(6)
-
-