PHP-Pear: Failed to fetch list of available modules

Failed to fetch list of available modules :
Notice: Undefined variable: errstr in PEAR/REST.php on line 428

Notice: Undefined variable: errno in PEAR/REST.php on line 428

Notice: Undefined variable: errstr in PEAR/REST.php on line 428

Notice: Undefined variable: errno in PEAR/REST.php on line 428
Connection to `pear.php.net:80’ failed:

is what I get on /php-pear/

Webmin version 1.650 Virtualmin version 4.02.gpl GPL
CentOS 6.4

I’m now on Webmin version 1.660 Virtualmin version 4.03.gpl GPL CentOS 6.5 and the problem persists. What should I try next?