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PHP replacing new value in a text file

Ranch Hand

Posts: 71

posted 11 years ago

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I have only put the PHP code I dont think HTML is needed as its quite a standard form.
I am kind stuck here. What i need to is everytime a user enters the no of oranges, apples and bananas this value be added on to what ever value there is in the text file currently.

in the text file if the user submits for the first time it will print out in the example below:

The total Number of Apples: 10
The total Number of Bananas: 10
The total Number of Oranges: 10

subsequent submission it will add on to the new value entered and it will replace the value 10 in this case.

Can someone assist in solving this problem?
Thanks

<html>
  <body>
  
    <?php

// Get form data values

$Apples = $_POST["Apples"];
      $Oranges = $_POST["Oranges"];
      $Bananas = $_POST["Bananas"];
      $username = $_POST["username"];
      $payment = $_POST["payment"];

// Compute the item costs and total cost

$Apples_cost = 0.69 * $Apples;
      $Oranges_cost = 0.59 * $Oranges;
      $Bananas_cost = 0.39 * $Bananas;

$total_price = $Apples_cost + $Oranges_cost + 
                     $Bananas_cost;
      $total_items = $Apples + $Oranges + $Bananas;

// Return the results to the browser in a table

?>
    <h4> Customer: 
    <?php
      print ("$username");
    ?>
	</h4>

<table border = "border">
      <caption> Order Information </caption>
      <tr>
        <th> Product </th>
        <th> Unit Price </th>
        <th> Quantity Ordered </th>
        <th> Item Cost </th>
      </tr>
      <tr align = "center">
        <td> Apples </td>
        <td> $0.69 </td>
        <td> <?php print ("$Apples"); ?> </td>
        <td> <?php printf ("$ %4.2f", $Apples_cost); ?>
        </td>
      </tr>
      <tr align = "center">
        <td> Oranges </td>
        <td> $0.59 </td>
        <td> <?php print ("$Oranges"); ?> </td>
        <td> <?php printf ("$ %4.2f", $Oranges_cost); ?>
        </td>
        </tr>
      <tr align = "center">
        <td> Bananas </td>
        <td> $0.39 </td>
        <td> <?php print ("$Bananas"); ?> </td>
        <td> <?php printf ("$ %4.2f", $Bananas_cost); ?>
        </td>
      </tr>
	  
	  <tr>
			<b>
			<td> Total </td>
			<td> NA </td>
			<td><?php printf ("Quantity:  $total_items <br />"); ?>  </td>
			<td><?php printf ("Cost: $ %5.2f <br />", $total_price); ?></td>
			</b>
	  </tr>
    </table>

<?php

$filename = "order.txt";
$handle = fopen($filename, "r");

$Data = fread($handle, 512); 
echo $Data;
$pattern = "?P<digit>\d+";
preg_match($pattern,$Data,$matches);
print_r($matches);

fclose($handle);

$Handle = fopen($File, 'w');
fwrite($Handle, "The total Number of Apples: ".$Apples.PHP_EOL); 
fwrite($Handle, "The total Number of Bananas: ".$Bananas.PHP_EOL);
fwrite($Handle, "The total Number of Oranges: ".$Oranges.PHP_EOL);

fclose($Handle); 
 ?>

</body>
</html>

K. Tsang

Bartender

Posts: 3648

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posted 11 years ago

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Well first you need to "read" the values and add the new value

K. Tsang CEng MBCS PMP PMI-ACP OCMJEA OCPJP

sourav jain

Greenhorn

Posts: 22

posted 11 years ago

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hi

i have made class for insert the total number of apples, banana, oranges in file , i am using static variable instead simple variable. static variable preserve value all time .

<!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>Untitled Document</title>
</head>

<body>

<?php

class ABC
{

static $totalorange='';
static $totalbnana='';
static $totalapples='';
static $total='';
static $totalitems='';

function fun($apples,$bannas,$oran)
{

global $totalorange,
$totalbnana,
$totalapples,
$total,
$totalitems;

$app=$apples;
$ban=$bannas;

$oran=$oran;

$totalapples=$app+$totalapples;
$totalbnana=$ban+$totalbnana;
$totalorange=$oran+$totalorange;
$totalitems=$totalorange+$totalbnana+$totalapples;
echo $total=$total+$totalitems;

$file=fopen("sourav.txt","w");

fwrite($file,"the total oranges is".$totalapples);

fclose($file);

}

}

$obj =new ABC;
$obj->fun(70,20,30);
//$obj->insert();
?>

</body>
</html>

Ashton Cohen

Greenhorn

Posts: 1

posted 10 years ago

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Abhradeep

Did you ever get your edit fruit quantity PHP code /page going?

Can you share the final code please.

I'm having trouble applying the above snippets to a form based on a 4-line text file to a quantity-edit web form project similar to yours maybe.

fruitform.png

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