{"action":"closed","issue":{"url":"https://api.github.com/repos/hushicai/node-phpcgi/issues/3","labels_url":"https://api.github.com/repos/hushicai/node-phpcgi/issues/3/labels{/name}","comments_url":"https://api.github.com/repos/hushicai/node-phpcgi/issues/3/comments","events_url":"https://api.github.com/repos/hushicai/node-phpcgi/issues/3/events","html_url":"https://github.com/hushicai/node-phpcgi/issues/3","id":66117447,"number":3,"title":"请问执行child.close时的code是什么返回的？","user":{"login":"dongmei761","id":848680,"avatar_url":"https://avatars.githubusercontent.com/u/848680?v=3","gravatar_id":"","url":"https://api.github.com/users/dongmei761","html_url":"https://github.com/dongmei761","followers_url":"https://api.github.com/users/dongmei761/followers","following_url":"https://api.github.com/users/dongmei761/following{/other_user}","gists_url":"https://api.github.com/users/dongmei761/gists{/gist_id}","starred_url":"https://api.github.com/users/dongmei761/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/dongmei761/subscriptions","organizations_url":"https://api.github.com/users/dongmei761/orgs","repos_url":"https://api.github.com/users/dongmei761/repos","events_url":"https://api.github.com/users/dongmei761/events{/privacy}","received_events_url":"https://api.github.com/users/dongmei761/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-04-03T09:49:10Z","updated_at":"2015-04-03T09:52:50Z","closed_at":"2015-04-03T09:52:50Z","body":"请问child.on('close'中的code的值是怎么返回的？我在使用的时候总是提示exit with code 255，但是不知道这个code代表什么意思具体对应的是什么错误，因为自己不是很熟悉php，所以麻烦请教一下，谢谢"}}