2015年4月开始的工作PHP (HTTP GET)解决方案(不含PHP 5 SDK):

function get_facebook_user_avatar($fbId){
        $json = file_get_contents('https://graph.facebook.com/v2.5/'.$fbId.'/picture?type=large&redirect=false');
        $picture = json_decode($json, true);
        return $picture['data']['url'];
}

你可以在参数中更改“类型”:

广场:

最大宽度和高度为50像素。

小

最大宽度为50像素，最大高度为150像素。

正常的

最大宽度为100像素，最大高度为300像素。

大

最大宽度为200像素，最大高度为600像素。

有办法做到这一点;)

感谢“http://it.toolbox.com/wiki/index.php/Use_curl_from_PHP_-_processing_response_headers”:

<?php

    /**
     * Facebook user photo downloader
     */

    class sfFacebookPhoto {

        private $useragent = 'Loximi sfFacebookPhoto PHP5 (cURL)';
        private $curl = null;
        private $response_meta_info = array();
        private $header = array(
                "Accept-Encoding: gzip,deflate",
                "Accept-Charset: utf-8;q=0.7,*;q=0.7",
                "Connection: close"
            );

        public function __construct() {
            $this->curl = curl_init();
            register_shutdown_function(array($this, 'shutdown'));
        }

        /**
         * Get the real URL for the picture to use after
         */
        public function getRealUrl($photoLink) {
            curl_setopt($this->curl, CURLOPT_HTTPHEADER, $this->header);
            curl_setopt($this->curl, CURLOPT_RETURNTRANSFER, false);
            curl_setopt($this->curl, CURLOPT_HEADER, false);
            curl_setopt($this->curl, CURLOPT_USERAGENT, $this->useragent);
            curl_setopt($this->curl, CURLOPT_CONNECTTIMEOUT, 10);
            curl_setopt($this->curl, CURLOPT_TIMEOUT, 15);
            curl_setopt($this->curl, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
            curl_setopt($this->curl, CURLOPT_URL, $photoLink);

            //This assumes your code is into a class method, and
            //uses $this->readHeader as the callback function.
            curl_setopt($this->curl, CURLOPT_HEADERFUNCTION, array(&$this, 'readHeader'));
            $response = curl_exec($this->curl);
            if (!curl_errno($this->curl)) {
                $info = curl_getinfo($this->curl);
                var_dump($info);
                if ($info["http_code"] == 302) {
                    $headers = $this->getHeaders();
                    if (isset($headers['fileUrl'])) {
                        return $headers['fileUrl'];
                    }
                }
            }
            return false;
        }


        /**
         * Download Facebook user photo
         *
         */
        public function download($fileName) {
            curl_setopt($this->curl, CURLOPT_HTTPHEADER, $this->header);
            curl_setopt($this->curl, CURLOPT_RETURNTRANSFER, true);
            curl_setopt($this->curl, CURLOPT_HEADER, false);
            curl_setopt($this->curl, CURLOPT_USERAGENT, $this->useragent);
            curl_setopt($this->curl, CURLOPT_CONNECTTIMEOUT, 10);
            curl_setopt($this->curl, CURLOPT_TIMEOUT, 15);
            curl_setopt($this->curl, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
            curl_setopt($this->curl, CURLOPT_URL, $fileName);
            $response = curl_exec($this->curl);
            $return = false;
            if (!curl_errno($this->curl)) {
                $parts = explode('.', $fileName);
                $ext = array_pop($parts);
                $return = sfConfig::get('sf_upload_dir') . '/tmp/' . uniqid('fbphoto') . '.' . $ext;
                file_put_contents($return, $response);
            }
            return $return;
        }

        /**
         * cURL callback function for reading and processing headers.
         * Override this for your needs.
         *
         * @param object $ch
         * @param string $header
         * @return integer
         */
        private function readHeader($ch, $header) {

            //Extracting example data: filename from header field Content-Disposition
            $filename = $this->extractCustomHeader('Location: ', '\n', $header);
            if ($filename) {
                $this->response_meta_info['fileUrl'] = trim($filename);
            }
            return strlen($header);
        }

        private function extractCustomHeader($start, $end, $header) {
            $pattern = '/'. $start .'(.*?)'. $end .'/';
            if (preg_match($pattern, $header, $result)) {
                return $result[1];
            }
            else {
                return false;
            }
        }

        public function getHeaders() {
            return $this->response_meta_info;
        }

        /**
         * Cleanup resources
         */
        public function shutdown() {
            if($this->curl) {
                curl_close($this->curl);
            }
        }
    }

URI  = https://graph.facebook.com/{}/picture?width=500'.format(uid)

您可以通过在线facebook id查找工具获得个人资料URI

你也可以通过类型参数可能的值小，正常，大，平方。

参考官方文件

博客文章“抓取Facebook图形对象的图片”可能会提供另一种解决方案。使用教程中的代码以及Facebook的Graph API及其PHP SDK库。

．.． 并且尽量不要使用file_get_contents(除非您已经准备好面对后果——参见file_get_contents vs curl)。

通过这个URL简单地获取数据:

http://graph.facebook.com/userid_here/picture

将userid_here替换为您想获取照片的用户的id。你也可以使用HTTPS。

可以使用PHP的file_get_contents函数读取URL并处理检索到的数据。

资源:

http://developers.facebook.com/docs/api

注意:在PHP .ini中，您需要确保OpenSSL扩展已启用，以便使用PHP的file_get_contents函数读取该URL。

将此作为已接受答案的评论，但觉得它值得更长的解释。从2015年4月开始，这可能会提高几次。

As of V2 of the graph api the accepted answer no longer works using a username. So now you need the userid first, and you can no longer use a username to get this. To further complicate matters, for privacy reasons, Facebook is now changing userid's per app (see https://developers.facebook.com/docs/graph-api/reference/v2.2/user/ and https://developers.facebook.com/docs/apps/upgrading/#upgrading_v2_0_user_ids ), so you will have to have some kind of proper authentication to retrieve a userid you can use. Technically the profile pic is still public and available at /userid/picture (see docs at https://developers.facebook.com/docs/graph-api/reference/v2.0/user/picture and this example user: http://graph.facebook.com/v2.2/4/picture?redirect=0) however figuring out a user's standard userid seems impossible based just on their profile - your app would need to get them to approve interaction with the app which for my use case (just showing a profile pic next to their FB profile link) is overkill.

如果有人想出了一种方法来获得基于用户名的个人资料图片，或者，如何获得一个用户id(甚至是一个交替的)来检索个人资料图片，请分享!与此同时，旧的图形url在2015年4月之前仍然有效。