php calculator help for finnishing touches.

edrew04 · January 6, 2009

the reset button wont work any more after the answer was outputted .i used the \b escape character but still wont work, i think i need a help from you guys. please help me here:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Machine Problem #1: Calculator</title>
<script language="javscript" type="text/javascript">
<!--
function addbool(){
calc.txtInput.value = '-'+calc.txtInput.value;
}
function resetform(){
calc.bool.disabled = 0;
calc.decimal.disabled = 0;
calc.add.disabled = 0;
calc.subtract.disabled = 0;
calc.multiply.disabled = 0;
calc.divide.disabled = 0;
}
function passval(){
calc.txtStored.value = calc.txtInput.value;
calc.txtInput.value = "";
}
function disablebtn(){
calc.divide.disabled = 1;
calc.multiply.disabled = 1;
calc.subtract.disabled = 1;
calc.add.disabled = 1;
calc.decimal.disabled = 0;
}
//-->
</script>
<style type="text/css">
input.field{
width:100%;
height:30px;
font-family:Verdana, Arial, Helvetica, sans-serif;
font-size:18px;
text-align:right;
}
.btn{
	width:40px;
height:40px;
}
  .btn0{
	width:100%;
height:40px;
}
</style>

</head>
<body>
<?php /*
       ===============================================================================================================
                                              TREND-1S,2008-2009,2nd SEM
                                                  MACHINE PROBLEM #1
                                                     JAN 10, 2009
                                             CARDANO,EDREW S.(20060121451)
       ===============================================================================================================
      */
      /*Hi maam its me!, Edrew Cardano, Trend 1s- 2nd sem, I'll explain my work, Happy New Year! c^^,) */

      
      if($_GET['txtTypeof']=='add') /*the variable txtTypeof is a hidden input type, it is where the operations will fall*/
        {
        $addens1=$_GET['txtStored'];/*the variable txtStored is a hidden input type, it is where the 1st input is read*/
        $addens2=$_GET['txtInput'];/*the variable txtStored is not a hidden input type, it is where the 2nd input is read*/
        $val=$addens1+$addens2;/* it will be echoed here for it will be echoed in the txtInput*/
        
        }

      elseif($_GET['txtTypeof']=='subtract')
        {
        $minuend=$_GET['txtStored'];
        $subtrahend=$_GET['txtInput'];
        $val=$minuend-$subtrahend;
        
        }
   
       elseif($_GET['txtTypeof']=='divide')
        {
        $dividend=$_GET['txtStored'];
        $divisor=$_GET['txtInput'];
        $val=$dividend/$divisor;
        
        }
    
       elseif($_GET['txtTypeof']=='multiply')
        {
        $multiplicand=$_GET['txtStored'];
        $multiplier=$_GET['txtInput'];
        $val=$multiplicand*$multiplier;
        
        }
        elseif($_GET['txtTypeof']=='multiply')/*this is the reset button,i need to make a code to reset values entirely.*/
        {
         
        $_GET['txtInput'] = "";/*I'm trying hard to make the code to delete the last session but still... :-( */
        
        }
        else /*it seemed to be redundant but useful as well. c^^,)*/
        $val = '';

?>

<form id="" name="calc" method="get" action="index.no.code3.php">
  <table width="100%" border="0">
    <tr>
      <td align="center" valign="middle"><table width="180" border="0">
          <tr>
            <td colspan="4" align="center" valign="middle"><input name="txtInput" type="text" class="field" id="txtInput"     

          style="width:100%;" maxlength="12" value="
<?php
if ($_GET['txtTypeof']=='reset')
   {
   echo $val->reset('Clear');
    function reset($val) 
     {
     $val = "";
     }

   }
   else
    echo $val; /*here is where i called the variable $val for the txtbox's result*/
?>"
/>
             <input type="hidden" name="txtStored" id="txtStored"/>
        <input type="hidden" name="txtTypeof" id="txtTypeof"/>
        </td>
          </tr>
          <tr>
            <td align="center" valign="middle"><label>
              <input name="7" type="button" class="btn" id="7" value="7" OnClick="calc.txtInput.value += '7'"/>
            </label></td>
            <td align="center" valign="middle"><input name="8" type="button" class="btn" id="8" value="8" 

OnClick="calc.txtInput.value += '8'"/></td>
            <td align="center" valign="middle"><input name="9" type="button" class="btn" id="9" value="9" 

OnClick="calc.txtInput.value += '9'"/></td>
            <td align="center" valign="middle"><input name="divide" type="button" class="btn" id="divide" value="/" 

OnClick="disablebtn(); passval(); calc.txtTypeof.value = 'divide';"/></td>
          </tr>
          <tr>
            <td align="center" valign="middle"><input name="4" type="button" class="btn" id="4" value="4" 

OnClick="calc.txtInput.value += '4'"/></td>
            <td align="center" valign="middle"><input name="5" type="button" class="btn" id="5" value="5" 

OnClick="calc.txtInput.value += '5'"/></td>
            <td align="center" valign="middle"><input name="6" type="button" class="btn" id="6" value="6" 

OnClick="calc.txtInput.value += '6'"/></td>
            <td align="center" valign="middle"><input name="multiply" type="button" class="btn" id="multiply" value="*" 

OnClick="disablebtn(); passval(); calc.txtTypeof.value = 'multiply';"//></td>
          </tr>
          <tr>
            <td align="center" valign="middle"><input name="3" type="button" class="btn" id="3" value="1" 

OnClick="calc.txtInput.value += '1'"/></td>
            <td align="center" valign="middle"><input name="2" type="button" class="btn" id="2" value="2" 

OnClick="calc.txtInput.value += '2'"/></td>
            <td align="center" valign="middle"><input name="1" type="button" class="btn" id="1" value="3" 

OnClick="calc.txtInput.value += '3'"/></td>
            <td align="center" valign="middle"><input name="subtract" type="button" class="btn" id="subtract" value="-" 

OnClick="disablebtn(); passval(); calc.txtTypeof.value = 'subtract';"//></td>
          </tr>
          <tr>
            <td align="center" valign="middle"><input name="0" type="button" class="btn" id="0" value="0" 

OnClick="calc.txtInput.value += '0'"/></td>
            <td align="center" valign="middle"><input name="bool" type="button" class="btn" id="bool" value="+/-" 

OnClick="addbool();this.disabled=1;"/></td>
            <td align="center" valign="middle"><input name="decimal" type="button" class="btn" id="decimal" value="." 

OnClick="this.disabled=1; calc.txtInput.value += '.'"/></td>
            <td align="center" valign="middle"><input name="add" type="button" class="btn" id="add" value="+" 

OnClick="disablebtn(); passval(); calc.txtTypeof.value = 'add';"//></td>
          </tr>
          <tr>
            <td colspan="2" align="center" valign="middle"><input name="reset" type="reset" class="btn0" id="reset" 

value="CE"/></td>
            <td colspan="2" align="center" valign="middle"><input name="equal" type="submit" class="btn0" id="equal" 

value="=" /></td>
          </tr>
      </table>
      <br /></td>
    </tr>
  </table>
</form>

</body>
</html>

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php calculator help for finnishing touches.

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