I figured how to do HTTP POST in PHP. Hurray! I smacked my head hard until I got this. The tutorials are easy to follow, but! The mod_curl is disabled at this freehost and fopen() URL access too. But the most misterious file HTACCESS is the only rescue. I tought it is disabled too. I tried setting PHP flags there and PHPinfo confirmed that it is possible to enable url access in fopen.