二進制安全的含義

維基百科上的解釋：

Binary-safe is a computer programming term mainly used in connection with string manipulating functions. A binary-safe function is essentially one that treats its input as a raw stream of data without any specific format. It should thus work with all 256 possible values that a character can take (assuming 8-bit characters).二進制安全是一種主要用于字符串操作函數(shù)相關(guān)的計算機編程術(shù)語。 一個二進制安全功能（函數(shù)），其本質(zhì)上將操作輸入作為原始的、無任何特殊格式意義的數(shù)據(jù)流。 其在操作上應(yīng)包含一個字符所能有的256種可能的值（假設(shè)為8為字符）。