//如果是第一次添加购物车,造一个二维数组存到SESSION里面
//如果不是第一次添加，有两种情况
//1.如果该商品购物车里面不存在，造一个一维数组扔到二维里面
//2.如果该商品在购物车存在，让数量加1

if(empty($_SESSION["gwd"])){
//如果是第一次添加购物车,造一个二维数组存到SESSION里面
$arr = array( array($ids,1));
$_SESSION["gwd"]=$arr;
}else{

$arr=$_SESSION["gwd"];
if(deep_in_array($ids,$arr)){
//如果该商品在购物车存在，让数量加1
foreach($arr as $k=>$v){
if($v[0]==$ids){
$arr[$k][1]++;
}
}
$_SESSION["gwd"]=$arr;
}else{
//如果该商品购物车里面不存在，造一个一维数组扔到二维里面
$arr=$_SESSION["gwd"];
$attr=array($ids,1);
$arr[]=$attr;
$_SESSION["gwd"]=$arr;
}
}
header("location:shopping_list.PHP");

function deep_in_array($value,$array) {
foreach($array as $item) {
if(!is_array($item)) {
if ($item == $value) {
return true;
} else {
continue;
}
}

if(in_array($value,$item)) {
return true;
} else if(deep_in_array($value,$item)) {
return true;
}
}
return false;
}

<Meta charset="UTF-8"> nofollow" rel="external nofollow" rel="external nofollow" rel="stylesheet" type="text/css"/>

购物车清单

1){ $arr[$zj][1]=$arr[$zj][1]-1; }else{ unset($arr[$zj]); //清除数组 $arr=array_values($arr); //重新索引数组 } $_SESSION["gwd"] = $arr; header("location:add_list.PHP");

query($sql,0); $aye = $arr[0][0];//余额 //var_dump($aye); if(!empty($_SESSION["gwd"])){ $arr = $_SESSION["gwd"]; $sum = 0; //$numbers = count($arr); foreach($arr as $v){ $sql = "select * from fruit where ids='{$v[0]}'"; $price = $db->query($sql,0); $dj = $price[0][2]; $sum = $sum+$dj*$v[1]; } }else{ echo "您还未购买商品!"; //header("shopping_list.PHP"); exit; } //判断余额是否满足购买 if($aye>=$sum){ //判断库存 foreach($arr as $v){ $skc = "select name,numbers from fruit where ids='{$v[0]}'"; $akc = $db->query($sql,0); var_dump($akc); $kc = $akc[0][4];//库存 //var_dump($kc);

if($kc<$v[1]){
echo "库存不足!";
exit;
}
}
//提交订单
//账户扣除余额
$skye = "update login set account=account-{$sum} where username='{$uid}'";
$zhye = $db->query($skye);

//扣除库存
foreach($arr as $v){
$skckc = "update fruit set numbers=numbers-{$v[1]} where ids='{$v[0]}'";
$sykc = $db->query($skckc);
}
//添加订单
$ddh = date("Y-m-d H:i:s");
$time = time();
$stjd = "insert into orders values('{$time}','{$uid}','{$ddh}')";
$wcdh = $db->query($stjd);
//添加订单详情
foreach($arr as $v){
$ddxq = "insert into orderdetails values('','{$ddh}','{$v[0]}','{$v[1]}')";
$axq = $db->query($ddxq);
}
}else{
echo "余额不足,请充值!";
exit;
}
header("location:shopping_list.PHP");