使用curl PHP从URL保存图像

尝试这个：

function grab_image($url,$saveto){    $ch = curl_init ($url);    curl_setopt($ch, CURLOPT_HEADER, 0);    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);    curl_setopt($ch, CURLOPT_BINARYTRANSFER,1);    $raw=curl_exec($ch);    curl_close ($ch);    if(file_exists($saveto)){        unlink($saveto);    }    $fp = fopen($saveto,'x');    fwrite($fp, $raw);    fclose($fp);}

并确保在php.ini中启用allow_url_fopen