Adding subscribers to a list using mailchimp's API V3

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problem ：

I'm trying to add users to a list I've created in Mailchimp but I can't find any code examples anywhere. I'm trying to add users to my Mailchimp In the list created in , But you can't find any code samples anywhere .I've tried figuring out how to use the API but I'm very much a "Look at an example and learn" kind of person. I have tried to find out ​​ How to use API​​, But I am very much like “ Learn from examples ” People who .

I've tried using version 2 of the API but nothing seems to be working despite working from examples on the net and Mailchimp says the following about earlier versions of their API on their website: I try to use API​​ Of the 2 edition , But despite the work done through examples on the network , But it doesn't seem to have any effect ,Mailchimp Said on its website about its API Earlier versions of the following ：

Versions 2.0 and earlier are deprecated. It is not recommended to use 2.0 And earlier .Only minimal support—bug fixes, security patches—will be available for those versions. These versions provide minimal support （ Bug fix , Security Patch ）.

UPDATE 1 : I did some further research based on TooMuchPete's answer with regards to the link on Managing Subscribers and altered some code I found here , but it won't work because the function http_build_query() doesn't deal with nested arrays. to update 1 ： be based on TooMuchPete Of answer , I am right. “ Manage subscribers ” The links on , And changed my in here Found some code , But because of the function http_build_query（） Cannot handle nested arrays , So it doesn't work .I'm not sure how to deal with the 'merge_fields' portion of adding a subscriber. I'm not sure how to handle adding subscribers “ merge_fields” part .My current code is below: My current code is as follows ：

$postdata = http_build_query(                    array(                        'apikey'        => $apikey,                        'email_address' => $email,                        'status'        => 'subscribed',                        'merge_fields'  => array(                            'FNAME' => $name                        )                    )                );                $opts = array('http' =>                    array(                        'method'  => 'POST',                        'header'  => 'Content-type: application/x-www-form-urlencoded',                        'content' => $postdata                    )                );                $context  = stream_context_create($opts);                $result = file_get_contents('https://us2.api.mailchimp.com/3.0/lists/<list_id>/members/', false, $context);                var_dump($result);                die('Mailchimp executed');

UPDATE 2 : I've now resorted to using curl and I've managed to get something almost working. to update 2 ： I now resort to the use of curl, And I try to make something almost work .The data sends through to Mailchimp but I'm receiving the error "Your request did not include an API key." Data sent to Mailchimp, But I got an error message “ Your request does not contain API secret key ”.I'm guessing I need to authenticate as mentioned here . I guess I need to follow here Authentication as described in .I've tried adding it to the http header which hasn't worked. I try to add it to a that doesn't work http In the head .See my code below: See the code below ：

$apikey = '<api_key>';                $auth = base64_encode( 'user:'.$apikey );                $data = array(                    'apikey'        => $apikey,                    'email_address' => $email,                    'status'        => 'subscribed',                    'merge_fields'  => array(                        'FNAME' => $name                    )                );                $json_data = json_encode($data);                $ch = curl_init();                curl_setopt($ch, CURLOPT_URL, 'https://us2.api.mailchimp.com/3.0/lists/<list_id>/members/');                curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json/r/n                                                            Authorization: Basic '.$auth));                curl_setopt($ch, CURLOPT_USERAGENT, 'PHP-MCAPI/2.0');                curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);                curl_setopt($ch, CURLOPT_TIMEOUT, 10);                curl_setopt($ch, CURLOPT_POST, true);                curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);                curl_setopt($ch, CURLOPT_POSTFIELDS, $json_data);                                                                                                                                  $result = curl_exec($ch);                var_dump($result);                die('Mailchimp executed');

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Solution ：

Reference resources ： https://stackoom.com/en/question/23tkp