远程图片下载到本地

 function http_get_imgData($url) {

    $ch = curl_init ();
    curl_setopt ( $ch, CURLOPT_CUSTOMREQUEST, 'GET' );
    curl_setopt ( $ch, CURLOPT_SSL_VERIFYPEER, false );
    curl_setopt ( $ch, CURLOPT_URL, $url );
    ob_start ();
    curl_exec ( $ch );
    $return_content = ob_get_contents ();
    ob_end_clean ();

    $return_code = curl_getinfo ( $ch, CURLINFO_HTTP_CODE );
    return $return_content;
}
// 获取到的内容 写入保存到本地

if(!file_exists($path.'/avatar')){
    mkdir(iconv("UTF-8", "GBK", $path.'/avatar'),0777,true);
}
//定义文件名
$avatarImg = $path.'/avatar/'.$filename;
$filename   = iconv("UTF-8", "GBK",$avatarImg);
$fp         = @fopen($filename,"w+"); //将文件绑定到流 (以读写的模式写入)
fwrite($fp,$content); //写入文件
fclose($fp);