Sorry, you're english is a little hard to understand - can I confirm?

PHP5.1: Connect failed
PHP5.3 Connect succeeded

Is that correct?

Jon

thanks for your reply.

yes,
PHP5.1 : connect failed
PHP5.3 : connect succeeded

Concrete5.4.1 on PHP5.1+Centos5.5 said;
--
Error establishing connection to the concrete5 community. Please check that curl and other required libraries are enabled.
--

next, i tried click [connect to community] button.

Concrete5.4.1 on PHP5.1+Centos5.5 said;
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Your site is already connected to the concrete5 marketplace.
--

Next, i had updated to PHP5.3 from PHP5.1.
The problem was clear.

Well - you've kinda solved your problem then :) I would nalways recommend using 5.3 over 5.1. It's to do with having the correct libraries installed. I believe the default setup is different on 5.2 and 5.3 and that some required features are switched off by default in 5.1.

Jon

Thank you for your reply.

I would like to use PHP5.1. Because I would like to use many web site by CentOS5.

CentOS5.5 is in PHP5.1. When I would like to use PHP5.2 or PHP5.3, I have to install non standard packege PHP5.2 or 5.3.

Do you know what library should I install?

Not sure I'm afraid - Andrew might be able to help better...

I had the same problem initially, as I run on Centos, and I agree that it's best to stick with the standard packages.

However, I've started using the Zend stack, from Zend Server CE with Centos. It runs great and gives you PHP5.3, all kept stable and up to date by Zend. Decided that was a pretty good compromise :)

Jon