Strings Delphi

function CountPos(const subtext: string; Text: string): Integer;
begin
if (Length(subtext) = 0) or (Length(Text) = 0) or (Pos(subtext, Text) = 0) then
Result := 0
else
Result := (Length(Text) - Length(StringReplace(Text, subtext, ', [rfReplaceAll]))) div
Length(subtext);
end;