设置更改后，每当使用未初始化的变量、进行错误的文件访问及发生其他（大多数）无害错误时，PHP 都会报告一条警告消息，但也存在这是一个潜在攻击矢量的可能性。

This will result in PHP reporting a warning every time an uninitialized variable is used, each bad file access, and other (mostly) harmless errors, but might also represent a potential attack vector.

youdao

并初始化向量和数组的值在AS 3部分失败的一个矢量的目的？

Does initializing a Vector with an array of values in AS3 partially defeat the purpose of a Vector?

youdao