根据facebook的文档，你可以简单地使用linter api并传递 scrape = true 参数：

according to facebook's documentation you can simply do it by using the linter api and passing scrape=true parameter:

curl -X POST \
    -F "id={object-url OR object-id}" \
    -F "scrape=true" \
    "https://graph.facebook.com"

或使用php：

 $access_token="APP_ID|APP_SECRET"; //replace with your app details
 $params = array("id"=>'/*YOU PAGE URL*/',"scrape"=>"true","access_token"=>$access_token);
 $ch = curl_init("https://graph.facebook.com");
 curl_setopt_array($ch, array(
      CURLOPT_RETURNTRANSFER=>true,
      CURLOPT_SSL_VERIFYHOST=>false,
      CURLOPT_SSL_VERIFYPEER=>false,
      CURLOPT_POST=>true,
      CURLOPT_POSTFIELDS=>$params
 ));
 $result = curl_exec($ch);

此处