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unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ExtCtrls, StdCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    Shape1: TShape;
    Timer1: TTimer;
    Memo1: TMemo;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Timer1Timer(Sender: TObject);
    procedure FormCreate(Sender: TObject);
  private
    { Private-Deklarationen }
  public
    { Public-Deklarationen }
  end;

var
  Form1: TForm1;
  pfad: string;
implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
  shape1.brush.Color := clRed;
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  shape1.brush.Color := clGreen;
end;

procedure TForm1.Timer1Timer(Sender: TObject);
var
  p: Integer;
begin
  p := 0;
  try
    memo1.Lines.LoadFromFile('datei.txt');
    p := StrToInt(memo1.Lines[0]);
    deletefile('datei.txt');
  except
  end;
  case p of
    1: button1click(self);
    2: button2click(self);
  end;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  pfad := extractFilePath(paramstr(0));
end;

end.                    

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<form action="">
<input type="submit" value="Knopf 1" name="knopf">
<input type="submit" value="Knopf 2" name="knopf">
</form>

<?
  if (isset($knopf))
     {
       $f = fopen("datei.txt","w");
       switch ($knopf)
       {
         case "Knopf 1": fputs($f,"1"); echo "K1 gesetzt"; break;
         case "Knopf 2": fputs($f,"2"); echo "K2 gesetzt"; break;
       }
     }
?>