1.Fatal error變成了Error類型的Exception弹渔，未捕獲該Exception晤锹，則再觸發(fā)Fatal error
http://php.net/manual/zh/migration71.incompatible.php
http://www.xiaomlove.com/2017/04/28/throwable-exceptions-and-errors-in-php7/
2.INI 文件中?#?注釋格式被移除
http://php.net/manual/zh/migration70.incompatible.php
3.當(dāng)傳遞參數(shù)過(guò)少時(shí)將拋出錯(cuò)誤
http://php.net/manual/zh/migration71.incompatible.php
4.變量躁垛、屬性和方法的間接調(diào)用嚴(yán)格遵循從左到右的順序來(lái)解析
http://php.net/manual/zh/migration70.incompatible.php
5.foreach遍歷時(shí)张惹，數(shù)組指針不再移動(dòng)
