Trở về đầu
Nguồn: https://stackoverflow.com/questions/17187970/deprecated-assigning-the-return-value-of-new-by-reference-is-deprecated-in-phpe
May be some old php syntax or method, I changed my code and it worked for me:
Earlier:
$this->_ole =& new OLERead();
Change to: (removed & ampersand)
$this->_ole = new OLERead();
The warning and notices are gone now !