預(yù)定義常量

下列常量由此擴(kuò)展定義，且僅在此擴(kuò)展編譯入 PHP 或在運(yùn)行時(shí)動(dòng)態(tài)載入時(shí)可用。

VAR_REPRESENTATION_SINGLE_LINE (int)

var_representation() flag indicating that newlines should not be used for whitespace in variable representations.

VAR_REPRESENTATION_UNESCAPED (int)

var_representation() flag indicating that strings should be encoded as single quoted strings with unescaped control characters.