Memory problem in PHP simple HTML DOM

I was using PHP Simple HTML dom, a great and free library for parsing html pages and retreiving info from it. I really liked it.. But when it comes to parsing many differents pages of some website in one php script, you will get an error:

Allowed memory size of 67108864 bytes exhausted,

and this is because simple HTML dom don't free up the memory in real time, so the solution is:

Each time you create a dom object ( foe exemple using: $html = file_get_html("http://someurl/"); or  str_get_html... ), then when you don't need it anymore you have to call _destruct: