8, January 2009

checkdnsrr - PhP Manual

 
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checkdnsrr - PhP Manual

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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

Description

int 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.

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