Sorted:

apache2 won't start on boot because of “no listening sockets available” error-Collection of common programming errors

Any hardware/software routers that support Full Cone NAT?-Collection of common programming errors

could not load modules on centos directory does not exist?-Collection of common programming errors

HipHop Fatal error: syntax error, unexpected T_CLASS-Collection of common programming errors

phpdox composer not including vendor directory-Collection of common programming errors

Fatal error with FB.init: Uncaught OAuthException: Error validating access token-Collection of common programming errors

Fatal error: Call to a member function api() on a non-object-Collection of common programming errors

Iptables unresolved dependencies-Collection of common programming errors

UDP packet and firewall-Collection of common programming errors

PHP Fatal error: Call to a member function error when logging in to Facebook-Collection of common programming errors