This article introduces the concept and method of obtaining Access Token under the WeChat public platform.

1. Access Token

access_token is the globally unique ticket of the public account. The public account needs to use access_token when calling each interface. Under normal circumstances, access_token is valid for 7200 seconds. Repeated acquisition will cause the last access_token to become invalid.

The public account can use AppID and AppSecret to call this interface to obtain access_token. AppID and AppSecret can be obtained in development mode (you need to be a developer and your account has no abnormal status). Note that the https protocol must be used when calling all WeChat interfaces.

Interface call request description

http請求方式:?GET
https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=APPID&secret=APPSECRET

Parameter description

Return instructions

Under normal circumstances, WeChat will return the following JSON data packet to the public account:

{"access_token":"ACCESS_TOKEN","expires_in":7200}

{"errcode":40013,"errmsg":"invalid appid"}

Token: weixin

$appid = "";
$appsecret = "";
$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$appid&secret=$appsecret";

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE); 
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$output = curl_exec($ch);
curl_close($ch);
$jsoninfo = json_decode($output, true);
$access_token = $jsoninfo["access_token"];

{"access_token":"N2L7KXa084WvelONYjkJ_traBMCCvy_UKmpUUzlrQ0EA2yNp3Iz6eSUrRG0bhaR_viswd50vDuPkY5nG43d1gbm-olT2KRMxOsVE08RfeD9lvK9lMguNG9kpIkKGZEjIf8Jv2m9fFhf8bnNa-yQH3g","expires_in":7200}

##Parameter	Description
Obtained voucher
The validity time of the voucher, unit: seconds	Or use the official interface debugging tool, the address is: Use the web debugging tool to debug the custom menu interface Click to check the problem and get In this way, you also get the access token Attachment: Global return code description Every time a public account calls an interface, it may get a correct or incorrect return code. Developers can debug the interface based on the return code information and troubleshoot errors. The global return code description is as follows: ##40008 Illegal message type40009Illegal image file size##4001040011##40012Illegal thumbnail file size40013Illegal APPID40014Illegal access_tokenIllegal menu typeNumber of illegal buttonsNumber of illegal buttonsIllegal button name lengthIllegal button KEY lengthIllegal button URL lengthIllegal menu version numberNumber of illegal submenu levelsNumber of illegal submenu buttons##40024Illegal submenu button type40025Illegal submenu button name length 40026Illegal submenu button KEY length40027Illegal submenu button URL length40028Illegal custom menu user40029Illegal oauth_code40030Illegal refresh_token40031Illegal openid list40032Illegal openid list length40033Illegal request characters, cannot contain \uxxxx format characters40035Illegal parameters40038Illegal request format40039Illegal URL length40050Illegal group id40051The group name is illegal41001The access_token parameter is missing##42002refresh_token timeout##42003430014300243003430044300544001 ##44002The POST packet is empty44003The graphic message content is empty44004The text message content is empty45001Multimedia file size exceeds limit45002Message content exceeds limit45003 Title field exceeds limit45004Description field exceeds limit45005Link field exceeds limit 45006The picture link field exceeds the limit45007The voice playback time exceeds the limit45008The graphic message exceeds the limit45009The interface call exceeds the limit45010The number of created menus exceeds the limit45015The reply time exceeds the limit45016System grouping, modification is not allowed45017The group name is too long45018The number of groups exceeds the upper limit46001No media data exists46002 Menu version that does not exist46003Menu data that does not existNon-existent userParsing JSON/XML content errorapi function not authorizedThe user has not authorized the api<fieldset id="cmiw8"><xmp id="cmiw8"></xmp></fieldset><noframes id="cmiw8"><fieldset id="cmiw8"></fieldset></noframes> Return code Description -1 System busy 0 Request successful 40001 AppSecret error when obtaining access_token, or access_token is invalid 40002 Illegal credential type 40003 Illegal OpenID 40004 Illegal media file type 40005 Illegal file type 40006 Illegal file size 40007 Illegal media file id Illegal voice file size Illegal video file size ##40015 40016 40017 40018 40019 40020 40021 40022 40023 ##41002 Missing appid parameter 41003 Missing refresh_token parameter 41004 Missing secret parameter 41005 Missing multimedia file data 41006 Missing media_id parameter 41007 Missing submenu data 41008 Missing oauth code 41009 Missing openid 42001 access_token timeout oauth_code timeout Requires GET request Requires POST request Requires HTTPS request Requires receiver attention Requires friend relationship The multimedia file is empty ##46004 47001 48001 50001 附：接口頻率限制說明 公眾號調(diào)用接口并不是無限制的。為了防止公眾號的程序錯誤而引發(fā)微信服務器負載異常，默認情況下，每個公眾號調(diào)用接口都不能超過一定限制，當超過一定限制時，調(diào)用對應接口會收到如下錯誤返回碼： {"errcode":45009,"errmsg":"api freq out of limit"} 各接口調(diào)用頻率限制如下： 接口 每日限額 獲取access_token 2000 自定義菜單創(chuàng)建 1000 自定義菜單查詢 10000 自定義菜單刪除 1000 創(chuàng)建分組 1000 獲取分組 1000 修改分組名 1000 移動用戶分組 100000 上傳多媒體文件 5000 下載多媒體文件 10000 發(fā)送客服消息 500000 獲取帶參數(shù)的二維碼 10000 獲取關注者列表 500 獲取用戶基本信息 5000000 獲取網(wǎng)頁授權access_token 2000000 刷新網(wǎng)頁授權access_token 2000000 網(wǎng)頁授權獲取用戶信息 2000000 更多微信公眾平臺開發(fā)-ACCESS TOKEN?相關文章請關注PHP中文網(wǎng)！ Statement of this Website The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. 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