（对不起我的英语）
我有点问题。
我想在会话中存储一个shop-bascket，所以我创建了php/classes/bascket.php：
class Product
{
private $id;
private $quantity;
function __construct(int $id, int $q)
{
$this->id = $id;
$this->quantity = $q;
}
...
}
class Bascket
{
private $products = array();
/* for testing */
function __construct()
{
$this->products[] = new Product(26, 1006);
}
function add(int $id, int $quantity)
{
...
}
function delete(int $id, int $quantity)
{
...
}
function __get($field) {
return $this->$field;
}
}
我在会话的任何地方使用这个课程：
include "php/classes/bascket.php"; (*or another correct path*)
session_start();
if(!isset($_SESSION["bascket"])) {
$_SESSION["bascket"] = serialize(new Bascket());
}
$bascket = unserialize($_SESSION["bascket"]);
因为我想按下按钮显示底部，我做了一个ajax，它执行以下操作：
function display_bascket() {
$.ajax({
url: 'php/take_bascket.php',
dataType: 'text',
cache: false,
contentType: false,
processData: false,
type: 'post',
success: function(bascket){
//bascket = JSON.parse(bascket);
//bascket = jQuery.parseJSON(bascket);
$("#content").html(bascket);
}
});
}
我尝试了很多可以在take_bascket.php中显示正确的东西来接收一个好的数组，或者在ajax中显示一个json。
<?php
session_start();
include "classes/bascket.php";
if(!isset($_SESSION["bascket"])) {
$_SESSION["bascket"] = serialize(new Bascket());
}
// I tried many variants:
var_dump($_SESSION["bascket"]);
/*
* output:
* string(116) "O:3:"Bascket":1:{s:12:"Bascketproducts";a:1:{i:0;O:6:"Product":2:{s:10:"Productid";i:26;s:17:"Productquantity";i:1006;}}}"
*
* and I don't know how to handled it in ajax to get the products array
*/
var_dump(unserialize($_SESSION["bascket"]));
/*
* output:
* object(Bascket)#1 (1) { ["products":"Bascket":private]=> array(1) { [0]=> object(Product)#2 (2) { ["id":"Product":private]=> int(26) ["quantity":"Product":private]=> int(1006) } } }
*
* and I don't know how to handled it in ajax to get the products array
*/
var_dump(json_encode($_SESSION["bascket"]));
/*
* output:
* string(158) ""O:3:\"Cos\":1:{s:12:\"\u0000Cos\u0000products\";a:1:{i:0;O:6:\"Product\":2:{s:10:\"\u0000Product\u0000id\";i:26;s:17:\"\u0000Product\u0000quantity\";i:1006;}}}""
*
* and I don't know how to handled it in ajax to get the products array
*/
var_dump(((unserialize($_SESSION["bascket"]))->products));
/*
* output:
* array(1) { [0]=> object(Product)#2 (2) { ["id":"Product":private]=> int(26) ["quantity":"Product":private]=> int(1006) } }
*
* and I don't know how to handled it in ajax to get the products array
*/
var_dump(((unserialize($_SESSION["bascket"]))->products[0]));
/*
* output:
* object(Product)#2 (2) { ["id":"Product":private]=> int(26) ["quantity":"Product":private]=> int(1006) }
*
* and I don't know how to handled it in ajax to get the products array
*/
正如你所看到的，我也尝试了不同的方法来操纵ajax中的输出。但它或它是一个字符串，我不能在数组中转换它。或者我不能把它变成json等等。
请您尝试找到完整的解决方案吗？我的意思是take_bascket.php，也是我在js中的display_bascket（）中所要做的。
提前谢谢你
我做了有人在一篇文章中说：
php/classes/bascket.php
<?php
class Product
{
private $id;
private $quantity;
function __construct(int $id, int $q)
{
$this->id = $id;
$this->quantity = $q;
}
function decrease(int $value)
{
...
}
function increase(int $value) {
...
}
public function toArray(){
return [
'id' => $this->id,
'quantity' => $this->quantity,
];
}
}
class Bascket
{
private $products = array();
/* for testing */
function __construct()
{
$this->products[] = new Product(26, 1006);
}
function add(int $id, int $quantity)
{
...
}
function delete(int $id, int $quantity)
{
...
}
public function toJson(){
$products = [];
foreach ($this->products as $product) {
$products[] = $product->toArray();
}
return json_encode(
[
'products' => $products
],
JSON_PRETTY_PRINT
);
}
function __get($field) {
return $this->$field;
}
}
这就是我理论上如何创建PHP JSON更容易。
但请看take_bascket.php：
<?php
session_start();
include "classes/bascket.php";
if(!isset($_SESSION["bascket"])) {
$_SESSION["bascket"] = serialize(new Bascket());
}
var_dump(((unserialize($_SESSION["bascket"]))->toJson()));
/*
* output:
* string(98) "{ "products": [ { "id": 26, "quantity": 1006 } ] }"
*/
display_bascket()中使用它：function display_bascket() {
$.ajax({
url: 'php/take_bascket.php',
dataType: 'text',
cache: false,
contentType: false,
processData: false,
type: 'post',
success: function(bascket){
//bascket = JSON.parse(bascket);
$("#content").html(bascket);
}
});
}
如果我不使用JSON.parse()，它将显示下一个纯文本：
string（98）“{”products“：[{”id“：26，”quantity“：1006}]}”
相反，如果我使用JSON.parse（），我有一个控制台错误：
Uncaught SyntaxError: Unexpected token s in JSON at position 0
at JSON.parse (<anonymous>)at Object.success (display_bascket.js:10)
at j (jquery.js:2) at Object.fireWith [as resolveWith] (jquery.js:2)
at x (jquery.js:4) at XMLHttpRequest.b (jquery.js:4)
答案 0 :(得分：1)
我建议在每个对象中创建一个返回该对象的JSON表示的方法。
例如（filename：products.php）：
cosine = (double (*)(double))dlsym(handle, "cos")这将生成一个可以与jQuery class Product {
private $name;
private $value;
private $quantity;
public function __construct($name, $value, $quantity){
$this->name = $name;
$this->value = $value;
$this->quantity = $quantity;
}
public function toArray(){
return [
'name' => $this->name,
'value' => $this->value,
'quantity' => $this->quantity,
];
}
}
class Basket{
private $products = [];
public function addProduct(Product $p){
$this->products[] = $p;
}
public function toJson(){
$products = [];
foreach ($this->products as $p) {
$products[] = $p->toArray();
}
return json_encode(
[
'products' => $products
],
JSON_PRETTY_PRINT
);
}
}
$b = new Basket();
$b->addProduct(new Product('Apple', 1, 5));
$b->addProduct(new Product('Banana', .5, 2));
$b->addProduct(new Product('Carrots', .35, 6));
echo $b->toJson();
方法一起使用的JSON对象。
如下面的示例（filename：products.html）：
.getJSON()