直取（当前qq所用的）图标：

方案1：http://q1.qlogo.cn/g?b=qq&nk=10001&s=100

方案2：http://q2.qlogo.cn/headimg_dl?dst_uin=10001&spec=100

其中10001为QQ号码

方案3：以下为php片段代码，通过QQ空间获取昵称和图标

$api = 'http://r.qzone.qq.com/fcg-bin/cgi_get_portrait.fcg';
$qqArr = [
    '10001',
];
$ret = file_get_contents($api . '?' . http_build_query(['uins' => implode(',', $qqArr)]));
$ret = mb_convert_encoding((string)$ret,'UTF-8');
$ret = str_replace("\n", '', $ret);
preg_match('/^.*\((.*)\)\;{0,1}$/', $ret, $match);
$infoStr = $match[1];
$infoArr = json_decode($infoStr, true);
if(isset($infoArr['error'])){
    $errInfo = $infoArr['error'];
    echo isset($errInfo['msg']) ? $errInfo['msg'] : json_encode($errInfo);
    exit();
}
$userInfo = [];
foreach ($infoArr as $userId => $info) {
    $userInfo[] = [
        'user_id'  => $userId,
        'qq'       => array_shift($qqArr),
        'head_img' => isset($info[0]) ? $info[0] : '',
        'nickname' => isset($info[6]) ? $info[6] : '',
    ];
}
print_r($userInfo);
echo '
';
print_r($infoArr);
exit();