ASYNC CALL SUPPORT for PHP - what is it?

[Ovidiu]

I am trying to install a product on my Debian Squeeze server configured with ISPCFG3 and it shows one problem when it checks its requirements.
Unfortunately there seems to be a problem with the following:

ASYNC CALL SUPPORT
PHP should be able to access files in the same server through a full url
eg. http://mydomain.tld/wpcontrol/execute.php
DISABLED

I tried asking their support and the only feedback I got was change servers, which is ridiculous so I did some digging and the only possible hint I found is:

a curl setting called AsynchDNS that is set to No but I am unsure if this really is the problem and how to set it to YES.

Any hints?

[till]

maybe php curl is not installed. Try to install it with:

apt-get install php5-curl

and then restart apache.

[Ovidiu]

Thanks Till.
I got through to the software author meanwhile and the problems were quite a few:

- I had to remove the site from Cloudflare's features as it was breaking it
- I had to make an exception for this site in my mod_Pagespeed module
- some changes needed to be made to the .htaccess file sitting in the root folder (I was trying to install this software in a sub folder)

but it all works now :-)