what is wrong with this code of mine

[rohitb]

what is wrong with this code of mine. i am getting warning messages

Warning: Division by zero in /home/rohitb/public_html/test/live nifty trend/trend.php on line 52

 

Warning: Division by zero in /home/rohitb/public_html/test/live nifty trend/trend.php on line 54

<Form name ="form1" Method ="POST" >
Enter Nifty Spot Price<INPUT TYPE = "TEXT" value="<?php echo $_POST['spotprice'] ?>" Name ="spotprice"/>
<INPUT TYPE = "Submit" Name = "getCallPut" VALUE = "Next->">
</form>

<?php 

if(isset($_POST['getCallPut'])) { 
callput(); 
} 

function callput() {

$spotPrice = 1.0 * $_POST['spotprice'];
if($spotPrice%100>=0 && $spotPrice%100<40){
            $callStrikePrice=floor($spotPrice/100)*100 + 100;
            $putStrikePrice=floor($spotPrice/100)*100 - 100;
            
        }else if($spotPrice%100 >=40 && $spotPrice%100<=60){
            $callStrikePrice=floor($spotPrice/100)*100 + 100;
            $putStrikePrice=floor($spotPrice/100)*100;
            
        }else{
            $callStrikePrice=floor($spotPrice/100)*100 + 200;
            $putStrikePrice=floor($spotPrice/100)*100;
            
        }
echo' <Form name ="form2" Method ="POST" >';
echo'Enter price for Nifty <input type="text" name="something" disabled="" style="border:none;width:40px;background-color:#000000;color:yellow;font-weight:bold;text-align:center" value="'.$callStrikePrice.'"/> CE <input type="text" name="callRate" size="10"><br><br>';
echo'Enter price for Nifty <input type="text" name="something1" disabled="" style="border:none;width:40px;background-color:#000000;color:yellow;font-weight:bold;text-align:center" value="'.$putStrikePrice.'"/> PE <input type="text" name="putRate" size="10">';
echo'<INPUT TYPE = "Submit" Name = "trend" VALUE = "Calculate Trend->">';
echo'</form>';  
                 }
 ?>

<?php

if(isset($_POST['trend'])) { 
trend(); 
} 

function trend(){
$callRate = 1.0 * $_POST['callRate'];
$putRate = 1.0 * $_POST['putRate'];
$actualCallRate = ceil(100*(((($callStrikePrice-$spotPrice)-($callStrikePrice-($callStrikePrice+$putStrikePrice)/2))/($callStrikePrice - $spotPrice)) + 1) * $callRate);
$actualPutRate = ceil(100.0 * (1 - (((($callStrikePrice+$putStrikePrice)/2.0 - $putStrikePrice) - ($spotPrice - $putStrikePrice))/($spotPrice - $putStrikePrice))) * $putRate);
$buyPercent = ceil(10000.0 * $actualCallRate/($actualCallRate + $actualPutRate));
$sellPercent =  ceil(10000.0 * $actualPutRate/($actualCallRate + $actualPutRate));
 
echo'The chances of Nifty Future going up is ' .$buyPercent/100.0.  ' % and going down is ' .$sellPercent/100.0. ' %';
if($buyPercent==$sellPercent){
            echo"<br/><h1 style='color:yellow'>TREND IS NEUTRAL</h1>";
        }else if($buyPercent>$sellPercent){
            echo"<br/><h1 style='color:green'>TREND IS UP</h1>";
        }else{
            echo"<br/><h1 style='color:red'>TREND IS DOWN</h1>";
        }   
        }              
?>

pls help me ...im trying to get some thing like this http://stocknews72.blogspot.in/p/stock-tips.html... how can i achieve this with above code

[requinix]

Variables defined outside a function (including in a different function) are not available inside the function. So trend() cannot use $callStrikePrice or $spotPrice or $putStrikePrice or any of the other variables that callput() defines.

 

Your script doesn't need those two functions. Put their code inline.

[rohitb]

Variables defined outside a function (including in a different function) are not available inside the function. So trend() cannot use $callStrikePrice or $spotPrice or $putStrikePrice or any of the other variables that callput() defines.

 

Your script doesn't need those two functions. Put their code inline.

can u help me with that

[requinix]

Put the code you have for the functions in the place where you were calling the functions. Give it a shot and post your code if it's not working.