March 2002
Intermediate to advanced
528 pages
21h 29m
English
Content preview from Programming PHP
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Name
checkdnsrr
Synopsis
int checkdnsrr(stringhost[, stringtype])
Searches DNS records for a host having the given type. Returns
true if any records are found, and
false if none are found. The host type can take
any of the following values (if no value is specified,
MX is the default):
|
|
IP address |
|
|
Mail exchanger |
|
|
Name server |
|
|
Start of authority |
|
|
Pointer to information |
|
|
Canonical name |
|
|
Any of the above |
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.