[RFC][VOTE] E_WARNING on invalid container read-adccess

Hi all, I raised this concept a couple weeks ago to a couple +1's. Discussion was held mostly upon the PR [1], and I went through and documented within the RFC [2]. I'd like to go ahead and open up the RFC to voting to the scope that it is written. -- Dave [1] https://github.com/php/php-src/pull/2031 [2] https://wiki.php.net/rfc/notice-for-non-valid-array-container