微信卡包是去年微信开放平台推出的新接口，由于前段时间一直在忙公司的微信行业定制项目，所以直到现在才有时间将这个接口的功能开发出来。下面就为大家总结一下开发过程中遇到的10个问题：
1.数据发送不再使用XML格式的数据，而是使用JSON。
这点算是卡包和其他微信接口最大的不同了，既然如此，我们就需要对 CURL 的请求方法进行一些改造：
function httpPost($url, $data, $is_json=false) {
if(!$is_json){
if(is_array($data)){
$query_data = http_build_query($data);
} else {
$query_data = $data;
}
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_TIMEOUT, 500);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $query_data);
$res = curl_exec($ch);
} else {
if(is_array($data)){
$json = json_encode($data);
} else {
$json = $data;
}
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($ch, CURLOPT_POSTFIELDS, $json);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
'Content-Type: application/json',
'Content-Length: ' . strlen($json))
);
$res = curl_exec($ch);
}
curl_close($ch);
return $res;
}
2*.使用json_encode提交门店信息，发现在后台数据变成了unicode 码。
这是因为在使用PHP的json_encode函数，底层已经做了 unicode 处理。所以中文会自动转成unicode。所以我们需要使用urlencode函数对中文进行编码，转成json字符之后再用json_decode进行回转。
例如：
$arr = array ('a'=>'云秀网');
echo json_encode($arr);
// 输出： {"a":"\u811a\u672c\u4e4b\u5bb6"}
$arr = array ('a'=>urlencode('云秀网'));
echo urldecode(json_encode($arr));
// 输出：{"a":"云秀网"}
在PHP5.4, 这个问题终于得以解决, Json新增了一个选项: JSON_UNESCAPED_UNICODE, 故名思议, 就是说, Json不要编码Unicode.
让Json更懂中文(JSON_UNESCAPED_UNICODE)
<?php
echo json_encode("中文",JSON_UNESCAPED_UNICODE);
3.微信官方提供的CardSDK有BUG
官方提供的CardSDK是用来生成卡券的json数据，我发现里面有些字段的设置已经和新版的文档有不少出入，而且中文字符会出现unicode编码的问题，下面是我修改过的微信卡包CardSDK:
<?php
/*
微信卡包api SDK V1.0
!!README!!：
base_info的构造函数的参数是必填字段，有set接口的可选字段。
针对某一种卡的必填字段（参照文档）仍然需要手动set（比如团购券Groupon的deal_detail），通过card->get_card()拿到card的实体对象来set。
ToJson就能直接转换为符合规则的json。
Signature是方便生成签名的类，具体用法见示例。
注意填写的参数是int还是string或者bool或者自定义class。
更具体用法见最后示例test，各种细节以最新文档为准。
*/
class Sku{
function __construct($quantity){
$this->quantity = $quantity;
}
};
class DateInfo{
function __construct($type, $arg0, $arg1 = null)
{
if (!is_int($type) )
exit("DateInfo.type must be integer");
$this->type = $type;
if ( $type == 1 ) //固定日期区间
{
if (!is_int($arg0) || !is_int($arg1))
exit("begin_timestamp and end_timestamp must be integer");
$this->begin_timestamp = $arg0;
$this->end_timestamp = $arg1;
}
else if ( $type == 2 ) //固定时长（自领取后多少天内有效）
{
if (!is_int($arg0) || !is_int($arg1))
exit("fixed_term and fixed_begin_term must be integer");
$this->fixed_term = $arg0;
$this->fixed_begin_term = $arg1;
}else
exit("DateInfo.tpye Error");
}
};
class BaseInfo{
function __construct($logo_url, $brand_name, $code_type, $title, $color, $notice,
$description, $date_info, $sku)
{
if (! $date_info instanceof DateInfo )
exit("date_info Error");
if (! $sku instanceof Sku )
exit("sku Error");
// if (! is_int($code_type) )
// exit("code_type must be integer");
$this->logo_url = urlencode($logo_url);
$this->brand_name = urlencode($brand_name);
$this->code_type = $code_type;
$this->title = urlencode($title);
$this->color = $color;
$this->notice = urlencode($notice);
$this->description = urlencode($description);
$this->date_info = $date_info;
$this->sku = $sku;
}
function set_sub_title($sub_title){
$this->sub_title = urlencode($sub_title);
}
// function set_use_limit($use_limit){
// if (! is_int($use_limit) )
// exit("use_limit must be integer");
// $this->use_limit = $use_limit;
// }
function set_location_id_list($location_id_list) {
if (! is_array($location_id_list))
exit("location_id_list must be array");
$this->location_id_list = $location_id_list;
}
function set_use_custom_code($use_custom_code){
$this->use_custom_code = $use_custom_code;
}
function set_bind_openid($bind_openid){
$this->bind_openid = $bind_openid;
}
function set_can_share($can_share){
$this->can_share = $can_share;
}
function set_can_give_friend($can_give_friend) {
$this->can_give_friend = $can_give_friend;
}
function set_get_limit($get_limit){
if (! is_int($get_limit) )
exit("get_limit must be integer");
$this->get_limit = $get_limit;
}
function set_service_phone($service_phone) {
$this->service_phone = urlencode($service_phone);
}
function set_source($source) {
$this->source = urlencode($source);
}
// function set_location_id_list($location_id_list){
// $this->location_id_list = $location_id_list;
// }
function set_custom_url_name($custom_url_name){
$this->custom_url_name = urlencode($custom_url_name);
}
function set_custom_url($custom_url){
$this->custom_url = urlencode($custom_url);
}
function set_custom_url_sub_title($custom_url_sub_title){
$this->custom_url_sub_title = urlencode($custom_url_sub_title);
}
function set_promotion_url_name($promotion_url_name){
$this->promotion_url_name = urlencode($promotion_url_name);
}
function set_promotion_url($promotion_url){
$this->promotion_url = urlencode($promotion_url);
}
function set_promotion_url_sub_title($promotion_url_sub_title){
$this->promotion_url_sub_title = urlencode($promotion_url_sub_title);
}
};
class CardBase{
public function __construct($base_info){
$this->base_info = $base_info;
}
};
class GeneralCoupon extends CardBase{
function set_default_detail($default_detail){
$this->default_detail = urlencode($default_detail);
}
};
class Groupon extends CardBase{
function set_deal_detail($deal_detail){
$this->deal_detail = urlencode($deal_detail);
}
};
class Discount extends CardBase{
function set_discount($discount){
if (!is_int($discount))
exit("discount must be integer");
$this->discount = $discount;
}
};
class Gift extends CardBase{
function set_gift($gift){
$this->gift = urlencode($gift);
}
};
class Cash extends CardBase{
function set_least_cost($least_cost){
if (!is_int($least_cost))
exit("least_cost must be integer");
$this->least_cost = $least_cost;
}
function set_reduce_cost($reduce_cost){
if (!is_int($reduce_cost))
exit("reduce_cost must be integer");
$this->reduce_cost = $reduce_cost;
}
};
class MemberCard extends CardBase{
function set_supply_bonus($supply_bonus){
$this->supply_bonus = $supply_bonus?true:false;
}
function set_supply_balance($supply_balance){
$this->supply_balance = $supply_balance?true:false;
}
function set_bonus_cleared($bonus_cleared){
$this->bonus_cleared = urlencode($bonus_cleared);
}
function set_bonus_rules($bonus_rules){
$this->bonus_rules = urlencode($bonus_rules);
}
function set_balance_rules($balance_rules){
$this->balance_rules = urlencode($balance_rules);
}
function set_prerogative($prerogative){
$this->prerogative = urlencode($prerogative);
}
function set_bind_old_card_url($bind_old_card_url){
$this->bind_old_card_url = urlencode($bind_old_card_url);
}
function set_activate_url($activate_url){
$this->activate_url = urlencode($activate_url);
}
};
class ScenicTicket extends CardBase{
function set_ticket_class($ticket_class){
$this->ticket_class = urlencode($ticket_class);
}
function set_guide_url($guide_url){
$this->guide_url = urlencode($guide_url);
}
};
class MovieTicket extends CardBase{
function set_detail($detail){
$this->detail = urlencode($detail);
}
};
class Card{ //工厂
private $CARD_TYPE = Array("GENERAL_COUPON",
"GROUPON", "DISCOUNT",
"GIFT", "CASH", "MEMBER_CARD",
"SCENIC_TICKET", "MOVIE_TICKET" );
function __construct($card_type, $base_info)
{
if (!in_array($card_type, $this->CARD_TYPE))
exit("CardType Error");
if (! $base_info instanceof BaseInfo )
exit("base_info Error");
$this->card_type = $card_type;
switch ($card_type)
{
case $this->CARD_TYPE[0]:
$this->general_coupon = new GeneralCoupon($base_info);
break;
case $this->CARD_TYPE[1]:
$this->groupon = new Groupon($base_info);
break;
case $this->CARD_TYPE[2]:
$this->discount = new Discount($base_info);
break;
case $this->CARD_TYPE[3]:
$this->gift = new Gift($base_info);
break;
case $this->CARD_TYPE[4]:
$this->cash = new Cash($base_info);
break;
case $this->CARD_TYPE[5]:
$this->member_card = new MemberCard($base_info);
break;
case $this->CARD_TYPE[6]:
$this->scenic_ticket = new ScenicTicket($base_info);
break;
case $this->CARD_TYPE[8]:
$this->movie_ticket = new MovieTicket($base_info);
break;
default:
exit("CardType Error");
}
return true;
}
function get_card()
{
switch ($this->card_type)
{
case $this->CARD_TYPE[0]:
return $this->general_coupon;
case $this->CARD_TYPE[1]:
return $this->groupon;
case $this->CARD_TYPE[2]:
return $this->discount;
case $this->CARD_TYPE[3]:
return $this->gift;
case $this->CARD_TYPE[4]:
return $this->cash;
case $this->CARD_TYPE[5]:
return $this->member_card;
case $this->CARD_TYPE[6]:
return $this->scenic_ticket;
case $this->CARD_TYPE[8]:
return $this->movie_ticket;
default:
exit("GetCard Error");
}
}
function toJson()
{
return "{ \"card\":" . urldecode(json_encode($this)) . "}";
}
};
class Signature{
function __construct(){
$this->data = array();
}
function add_data($str){
array_push($this->data, (string)$str);
}
function get_signature(){
sort( $this->data, SORT_STRING );
return sha1( implode( $this->data ) );
}
};
// 调用官方创建卡包的SDK
//------------------------set base_info-----------------------------
$base_info = new BaseInfo($baseInfo['logo_url'], $baseInfo['brand_name'], $baseInfo['code_type'], $baseInfo['title'], $baseInfo['color'], $baseInfo['notice'], $baseInfo['description'], $dateInfo, new Sku((int)$baseInfo['quantity']) );
if($baseInfo['sub_title']) {
$base_info->set_sub_title( $baseInfo['sub_title'] );
}
if($baseInfo['location_id_list']) {
$base_info->set_location_id_list( $baseInfo['location_id_list'] );
}
$base_info->set_use_custom_code( $baseInfo['use_custom_code'] );
$base_info->set_bind_openid( $baseInfo['bind_openid'] );
$base_info->set_can_share( $baseInfo['can_share'] );
$base_info->set_can_give_friend( $baseInfo['can_give_friend'] );
if($baseInfo['get_limit']) {
$base_info->set_get_limit( (int)$baseInfo['get_limit'] );
}
if($baseInfo['service_phone']) {
$base_info->set_service_phone( $baseInfo['service_phone'] );
}
if($baseInfo['source']) {
$base_info->set_source( $baseInfo['source'] );
}
if($baseInfo['custom_url_name']) {
$base_info->set_custom_url_name( $baseInfo['custom_url_name'] );
}
if($baseInfo['custom_url']) {
$base_info->set_custom_url( $baseInfo['custom_url'] );
}
if($baseInfo['custom_url_sub_title']) {
$base_info->set_custom_url_sub_title( $baseInfo['custom_url_sub_title'] );
}
if($baseInfo['promotion_url_name']) {
$base_info->set_promotion_url_name( $baseInfo['promotion_url_name'] );
}
if($baseInfo['promotion_url']) {
$base_info->set_promotion_url( $baseInfo['promotion_url'] );
}
if($baseInfo['promotion_url_sub_title']) {
$base_info->set_promotion_url_sub_title( $baseInfo['promotion_url_sub_title'] );
}
//---------------------------set_card--------------------------------
$wxcard = new Card($cardType, $base_info);
foreach($card as $func => $args) {
$func='set_'.$func;
$wxcard->get_card()->$func( $args );
}
//--------------------------to json--------------------------------
$data = $wxcard->toJson();
//----------------------check signature------------------------
$signature = new Signature();
$signature->add_data( "875e5cc094b78f230b0588c2a5f3c49f" );
$signature->add_data( "wx57bf46878716c27e" );
$signature->add_data( "213168808" );
$signature->add_data( "12345" );
$signature->add_data( "55555" );
echo $signature->get_signature();
?>
4.*微信上传Logo图片接口
最后的话：微信卡包其实在微信公众平台已经有一个管理面板，但是为了扩展第三方平台的微信接入功能，已经方便以后定制开发使用这个接口进行二次营销，所以这个功能还是非常重要的。
