<?phpglobal $PHP_SELF;//echo $PHP_SELF;$t1=$_POST['textfield1'];$t2=$_POST['textfield2'];$t3=$_POST['textfield3'];$t4=$_POST['textfield4'];// 汉字--区位码if($t1!=""){$t2= sprintf("%02d%02d",ord($t1[0])-160,ord($t1[1])-160);//echo $t2;}// 区位码--汉字if($t3!=""){$t4 = chr(substr($t3,0,2)+160).chr(substr($t3,2,2)+160);//echo $t4;}?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http...