This documentation covers some (not all) of the objects, methods and properties of the API. The code itself should be fairly easy to hack if more complex changes are required.
The main DNS API class.
property DNSQuery::server (string)
DNS server hostname or IP as a string
property DNSQuery::port (decimal)
Port to use (default 53)
property DNSQuery::timeout (decimal)
Timeout in seconds (default 60)
property DNSQuery::udp (bool)
Will use UDP if true else use TCP (default true)
property DNSQuery::debug (bool)
Output some debug information when querying (default false)
property DNSQuery::debugbinary (bool)
Dump binary debug output when querying (default false)
property DNSQuery::error (bool)
Set if the last query resulted in an error
property DNSQuery::lasterror (string)
Description of the last error encountered (null string if no error)
property DNSQuery::lastnameservers (Class::DNSAnswer)
Nameserver record results returned from the last query
property DNSQuery::lastadditional (Class::DNSAnswer)
Result records from the additional section of the last query
method DNSQuery::DNSQuery (hostname (string), [port=53 (decimal)], [timeout=60 (decimal)], [udp=true (bool)], [debug=false (bool)])
The constructor function - do not call this directly, rather use $object=new DNSQuery(options...) to create the object. Configuration can be changed after initilisation by setting the relevant property directly.
mixed method DNSQuery::Query (question (string), [type=A (string)])
Query the nameserver with the given question for the optionally specified type (defaults to A). The question string would normally consist of a hostname, domain name or IP address (in normal or IN-ADDR.ARPA form).
The query will be executed against the configured server using the set protocol (UDP if the udp property is true else TCP). If an error is encountered at any point the error property is set to true, a description placed in the lasterror property and the method returns false.
On successful completion of the query a Class::DNSAnswer is returned containing the records from the answer portion of the response. The class properties lastnameservers and lastadditional will be set as Class::DNSAnswer objects containing the resource records returned in the nameserver and additional portion of the answer respectively.
string method DNSQuery::SmartALookup (hostname (string))
Takes a hostname and returns an IP address or a null string if the query failed. Will recursively lookup aliases to a depth of 5.
Intended as a DNS server specific version of gethostbyname()
property DNSAnswer::count (decimal)
Number of result records contained within the answer
property DNSAnswer::results (Class::DNSResult Array)
An array of Class::DNSResult objects containing each of the result records
property DNSResult::type (decimal)
Decimal record type
property DNSResult::typeid (string)
String of the type (i.e. A, MX, SOA etc) or null string if an unknown type
property DNSResult::class (decimal)
Numeric result class type
property DNSResult::ttl (decimal)
Time-to-live (TTL) of resource record
property DNSResult::data (string|binary)
The processed output of a known type (the IP address for an A record, mail exchange for an MX record) or the binary data for an unknown type
property DNSResult::domain (string)
The domain/domain name/hostname the record applies to i.e. the hostname that the A record in the data type of an A lookup refers to
property DNSResult::string (string)
A textual representation of the answer (if the type is known else a null string) i.e. "www.fish.com has address 18.104.22.168"
property DNSResult::extras (string Array)
An array of any extra data available for the record if the type was known with a relevant key i.e. "level" for MX record mail exchange priorities. See the main documentation for a full list of extra type-dependent data.
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