Delphi的StringReplace 字串替換函式

function StringReplace (const S, OldPattern, NewPattern: string; Flags: TReplaceFlags): string;

rfReplaceAll：全部替換

rfIgnoreCase：忽略大小寫

For Example：

var

aStr: String;

begin

aStr := "This is a book, not a pen!";

ShowMessage(StringReplace (aStr, "a", "two", []));//This is two book, not a pen!只替換了第一個符合的字

ShowMessage(StringReplace (aStr, "a", "two", [rfReplaceAll]));//This is two book, not two pen!替換了所有符合的字

aStr := "This is a book, not A pen!";

ShowMessage(StringReplace (aStr, "a", "two", [rfReplaceAll]));//This is two book, not A pen!只替換了符合的字(小寫a)

ShowMessage(StringReplace (aStr, "a", "two", [rfReplaceAll, rfIgnoreCase]));//This is two book, not two pen!不管大小寫替換了所有符合的字

end;