这是我的代码：
$url = "https://bitbucket.org/api/2.0/repositories/***/***/pullrequests/35/merge";
$curl1 = curl_init();
curl_setopt($curl1, CURLOPT_HTTPAUTH, CURLAUTH_BASIC );
curl_setopt($curl1, CURLOPT_USERPWD, "***:***");
curl_setopt($curl1, CURLOPT_HEADER, true);
curl_setopt($curl1, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));
curl_setopt($curl1, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl1, CURLOPT_URL, $url);
curl_setopt($curl1, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl1, CURLOPT_POST, true);
echo curl_exec($curl1);
这就是答案：
HTTP/1.1 400 BAD REQUEST Server: nginx/1.5.10 Date: Wed, 04 Mar 2015 06:03:15 GMT Content-Type: text/plain Content-Length: 11 Connection: keep-alive X-Served-By: app19 X-Render-Time: 0.0410010814667 Content-Language: de X-Static-Version: 572a80470390 Vary: Authorization, Accept-Language, Cookie X-Version: 1d224fb664b6 ETag: "825644f747baab2c00e420dbbc39e4b3" X-Request-Count: 27 X-Frame-Options: SAMEORIGIN Bad Request
为什么这不起作用？（出于安全考虑，我用***替换了一些信息）
您缺少该特定端点的强制参数，该参数应包含在您的请求正文中。
根据API，这些强制参数是owner、repo_slug和pull_request_id。
$request_body = array(
'owner' => 'account-name',
'repo_slug' => 'repo-name',
'pull_request_id' => 35
);
因为您将application/json指定为内容类型，所以需要json_encode上面的数组：
curl_setopt($curl1, CURLOPT_POSTFIELDS, json_encode($request_body));
顺便说一下，您可以使用bitbucket-api库，它可以帮助您以更简单的方式与BitBucketneneneba api交互。
使用该库接受拉取请求，看起来像这样：
$pull = new Bitbucket'API'Repositories'PullRequests();
// set your login credentials here
$pull->getClient()->addListener(
new 'Bitbucket'API'Http'Listener'BasicAuthListener('username', 'password')
);
$pull->accept($account_name, $repo_slug, 35);
你可以在文档中阅读更多内容。
免责声明：我是比特桶api库的作者