checkdnsrr

(PHP 4, PHP 5, PHP 7)

checkdnsrr — Check DNS records corresponding to a given Internet host name or IP address

Descrierea

checkdnsrr ( string $host [, string $type = "MX" ] ) : bool

Searches DNS for records of type type corresponding to host.

Parametri

host

host may either be the IP address in dotted-quad notation or the host name.

type

type may be any one of: A, MX, NS, SOA, PTR, CNAME, AAAA, A6, SRV, NAPTR, TXT or ANY.

Valorile întoarse

Returns TRUE if any records are found; returns FALSE if no records were found or if an error occurred.

Istoricul schimbărilor

Versiune Descriere
5.3.0 This function is now available on Windows platforms.
5.2.4 TXT type was added.

Note

Notă:

For compatibility with Windows before this was implemented, then try the » PEAR class » Net_DNS.

A se vedea și

  • dns_get_record() - Fetch DNS Resource Records associated with a hostname
  • getmxrr() - Get MX records corresponding to a given Internet host name
  • 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
  • the named(8) manual page