Solved

PHP - checkdnsrr - differences between "A, MX, NS, SOA, PTR, CNAME, AAAA, A6, SRV, NAPTR, TXT or ANY"

Posted on 2009-05-20
1
1,036 Views
Last Modified: 2012-06-27
Hi E's, I try to use the function checkdnsrr, but I don't know the differences between the $string Type of this function.
For try the function I used the code in snippet code, and I change the type for try, but the most of the times the return is true or false.

Can you explain the the differences (if some expert have a simple script where I can see the real differences, I apreciate).

Regards, JC
$ver = checkdnsrr("example.com", MX);

if ($ver == true){

	echo the domain exists;

	}

Open in new window

0
Comment
Question by:Pedro Chagas
1 Comment
 
LVL 30

Accepted Solution

by:
IanTh earned 250 total points
ID: 24435129
A = ip address
mx = mail server
ns = nameserver
soa = Start of Authority
http://support.microsoft.com/kb/163971
ptr = in arpa , reverse dns
cname = alias
aaaa = ip v6
a6 = ip v6
svr = backup mx

so your script will equal true if for instance example.com has an mx record set up
see http://quanta.sourceforge.net/docs/php/function.checkdnsrr.html 
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Part of the Global Positioning System A geocode (https://developers.google.com/maps/documentation/geocoding/) is the major subset of a GPS coordinate (http://en.wikipedia.org/wiki/Global_Positioning_System), the other parts being the altitude and t…
This article discusses four methods for overlaying images in a container on a web page
Learn how to match and substitute tagged data using PHP regular expressions. Demonstrated on Windows 7, but also applies to other operating systems. Demonstrated technique applies to PHP (all versions) and Firefox, but very similar techniques will w…
The viewer will learn how to count occurrences of each item in an array.

914 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now