<?
# smallcart.php
# ปรับปรุง : 10 กันยายน 2547 โดย บุรินทร์ รุจจนพันธุ์  0-1992-7223
# โปรแกรมนี้ไม่สมบูรณ์ เพราะต้องการให้นักศึกษานำไปศึกษา และปรับปรุงให้ใช้กับ mysql 
# เดิมโปรแกรมนี้ใช้ cookie อยู่ในหนังสือ perlphpasp.com บทที่ 18
# =======================
session_start();
if (!isset($_SESSION['allproduct']))   $_SESSION['allproduct'] = "";
if (isset($_GET['action'])) {
switch ($_GET['action']) {
case "removeall":  
  $_SESSION['allproduct'] = "";
  break;
case "add":  
  $_SESSION['allproduct'] = $_SESSION['allproduct'].":".$_GET['item'].",".$_GET['quantity'].",".$_GET['price'];
  $aproduct = $_SESSION['allproduct'];
  break;
case "view":
  $aproduct = $_SESSION['allproduct'];
  break;
case "remove":    
  $aproduct="";
  $getline = preg_split("/[:]/",$_SESSION['allproduct']);
  for ($j=1;$j<count($getline);$j++) {
    if ($_GET['removenumber'] <> $j) $aproduct = "$aproduct:$getline[$j]";
  }  
  $_SESSION['allproduct'] = $aproduct;
  break;  
case "sendorderbymail":
  $aproduct = $_SESSION['allproduct'];
  mail($_GET['tomail'],"Order from smallcart","$aproduct","From: ".$_GET['frommail']); 
  break;
}
# =======================
echo "<hr>Action : ".$_GET['action'];
if ($_GET['action'] == "add" || $_GET['action'] == "view" || $_GET['action'] == "remove") {
  $tpay = 0;
  echo "<ol>";
  $getline = preg_split("/[:]/",$aproduct);
  for ($j=1;$j<count($getline);$j++) {
    $rec = preg_split("/[,]/",$getline[$j]);
    echo "<li>Product: $rec[0] Quantity: $rec[1] Price: $rec[2]";
    $tpay = $tpay + ($rec[1] * $rec[2]);
  }
  echo "</ol>";
  echo "Total pay :". $tpay;
}
}
# =======================
# Data structure : item,price
$pro = "book,30:pen,2:car,100000";
$getline = preg_split("/[:]/",$pro);
for ($j=0;$j<count($getline);$j++) {
  $rec = preg_split("/[,]/",$getline[$j]);
  echo "<form action=".$_SERVER{'SCRIPT_NAME'}." method=get>";
  echo "<input type=text name=quantity value=1>";
  echo "<b>$rec[0]</b> price: $rec[1]";
  echo "<input type=hidden name=item value=".$rec[0].">";
  echo "<input type=hidden name=price value=".$rec[1].">";
  echo "<input type=submit value=add name=action></form>";
}
?>
<a href=?action=removeall>Remove All</a> | <a href=?action=view>View</a><br>
<form action="<?=$_SERVER{'SCRIPT_NAME'};?>" method=get>
Number: <input type=text name=removenumber value=1>
<input type=submit value=remove name=action>
</form>
<form action="<?=$_SERVER{'SCRIPT_NAME'};?>" method=get>
To seller: <input type=text name=tomail value=burin@yonok.ac.th size=40><br>
From customer: <input type=text name=frommail value=webmaster@thaiall.com size=40>
<br><input type=submit value=sendorderbymail name=action>
</form>