采图片，自己记下来比较靠谱

/**
$url 远程图片路径
$imgname 要保存图片的名称
*********切记要开放服务器的文件夹权限***********
**/
function catchimg($url,$imgname,$path = "wcpenguin/images/"){
    $ch = curl_init ();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);
    $file = curl_exec($ch);
    curl_close($ch);

    $resource = fopen($path . $imgname, 'a');
    fwrite($resource, $file);
    fclose($resource);
}