php

<html>
<head>
<title>Miniräknare</title>
</head>
<body>

<h1>Miniräknare</h1>

<form action="" method="post">
   <input  type="text" name="text" value="<?php $num1; ?>"><br/>

   <input  type="button" name="num1" value="1">
   <input  type="button" name="num2" value="2">
   <input  type="button" name="num3" value="3">
   <br/>

   <input  type="button" name="num4" value="4">
   <input  type="button" name="num5" value="5">
   <input  type="button" name="num6" value="6">
   <br/>


   <input  type="button" name="num7" value="7">
   <input  type="button" name="num8" value="8">
   <input  type="button" name="num9" value="9">
   </br/>

   <input  type="button" name="num0" value="0">
   <input  type="button" name="num9" value="-">
   <input  type="button" name="num9" value="+">
   <br/>

   <input  type="button" name="submit" value="submit"  width="50px" >
</form>