On Cloudy.eu.org free hosting sockets in PHP are enabled on a limited basis to prevent abuse. (No such limits here in Free Cloud Host
This means that common scripts that use sockets such as WordPress auto updates or Akismet spam filtering will work, more custom scripts that use socket will not work unless you upgrade to premium hosting.
You can upgrade using the “Upgrade Account” button in your free hosting cPanel. Using this link upgrades all your existing files/domains and databases to premium hosting.