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Manual: checkdnsrr
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  Updated
Sat, 12 Aug 2000
 closelog 
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checkdnsrr

(PHP3 , PHP4 )

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, or ANY. The default is MX.

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

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


User Contributed Notes: checkdnsrr

rdahlin@moranet.se
26-Nov-1999 09:03
I'd like to have the possability to choose which DNS server to use when using the DNS functions.
Is there any plans to include that feature in V4 ??

marek@welshdragon.com
13-Jan-2000 07:05
edit your resolv.conf file

oli@isnet.is
27-Jan-2000 06:59
Sometimes you might need to look up records in another server than your machine normally uses, so changing the resolv.conf file is not allways an option.

cshenton@uucom.com
07-Mar-2000 09:03
Where is the time-we-wait-for-answer set? I'd like to be able to specify a maximum time to wait for resolution and return FALSE/NULL if no response received in that time. Large sets of queries (e.g. validating email address hosts) cat take a *long* time due to brain damaged remote DNS, network congestion, etc.

bobie@sylaba.poznan.pl
17-Mar-2000 10:32
How to implement this function to dig in in DNS database (jumping to authoritative answer to find out if given $domain exists in whole DNS.
I mean 'nslookup' functionality. ???
<pre>checkdns($domain, 'NS');</pre>
but it looks only on my server...

przemekb@inet.com.pl
29-Mar-2000 03:30
why such code:
if ( checkdnsrr($domen)) echo ("registered");
doesn't work on NT systems - in return there is allways information that domain is not registered (for every domain)

script works fine on UNIX systems

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Previous page
  Network
  Updated
Sat, 12 Aug 2000
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