I seem to be getting conflicting gethostbyname behavior on different
servers. Before going into detail, here's the script I'm using:
<?
$address = $HTTP_SERVER_VA RS['REMOTE_ADDR'];
$rev = implode('.',arr ay_reverse(expl ode('.', $address)));
$lookup = "$rev.l1.spews. dnsbl.sorbs.net ";
echo gethostbyname($ lookup);
echo '<br />';
echo $lookup;
?>
On server A, the output I get is as follows:
176.115.112.70. l1.spews.dnsbl. sorbs.net
176.115.112.70. l1.spews.dnsbl. sorbs.net
On server B, the output I get is this:
195.69.95.204
176.115.112.70. l1.spews.dnsbl. sorbs.net
As I understand it, server A's output is the correct output - not
server B's.
Server A is running PHP Version 4.4.1 with Apache/1.3.34 while server B
is running PHP Version 4.3.11 with Apache/2.0.52. I'd like the above
script, however, to work just as well on server A as it does on server
B.
Any ideas as to how I might go about doing this or what the problem is?
Any help would be appreciated - thanks!
1  1727 
yawnmoth wrote: I seem to be getting conflicting gethostbyname behavior on different
servers. Before going into detail, here's the script I'm using:
<?
$address = $HTTP_SERVER_VA RS['REMOTE_ADDR'];
$rev = implode('.',arr ay_reverse(expl ode('.', $address)));
$lookup = "$rev.l1.spews. dnsbl.sorbs.net ";
echo gethostbyname($ lookup);
echo '<br />';
echo $lookup;
?>
On server A, the output I get is as follows:
176.115.112.70. l1.spews.dnsbl. sorbs.net
176.115.112.70. l1.spews.dnsbl. sorbs.net
On server B, the output I get is this:
195.69.95.204
176.115.112.70. l1.spews.dnsbl. sorbs.net
As I understand it, server A's output is the correct output - not
server B's.
Server A is running PHP Version 4.4.1 with Apache/1.3.34 while server B
is running PHP Version 4.3.11 with Apache/2.0.52. I'd like the above
script, however, to work just as well on server A as it does on server
B.
Any ideas as to how I might go about doing this or what the problem is?
Any help would be appreciated - thanks!
Hi,
Did one of them change recently their name maybe?
PHP caches lookups. (Or rather Apache does if I understand it well).
What MIGHT help are some usercontributed notes on www.php.net:
Two possibilities:
1) restart Apache (in case of caching DNS-problem)
2) Do not use gethostbyname, but use 'dig' instead.
Just go to www.php.net and look up the function for details.
Regards,
Erwin Moller This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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