PHP checkdnsrr function

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checkdnsrr

(PHP 3, PHP 4, PHP 5)

checkdnsrr —
Check DNS records corresponding to a given Internet host name or
IP address
Descriptionint checkdnsrr ( string host [, string type] )

Searches DNS for records of type type
corresponding to host. Returns TRUE if any
records are found; returns FALSE if no records were found or if
an error occurred.

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

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

Note:
AAAA type added with PHP 5.0.0

Note:
This function is not implemented on Windows platforms. Try the
PEAR class
Net_DNS.

See also dns_get_record(),
getmxrr(),
gethostbyaddr(),
gethostbyname(),
gethostbynamel(), and the named(8) manual
page.