Question

我需要使用CURL从网址保存图像并将其保存到我服务器上的文件夹中。我一直在与这个代码作斗争无济于事。理想情况下，我想抓住图像并将其保存为“photo1”或其他东西。救命！

    function GetImageFromUrl($link)

    {

    $ch = curl_init();

    curl_setopt($ch, CURLOPT_POST, 0);

    curl_setopt($ch,CURLOPT_URL,$link);

    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

    $result=curl_exec($ch);

    curl_close($ch);

    return $result;

    }

    $sourcecode = GetImageFromUrl($iticon);

    $savefile = fopen(' /img/uploads/' . $iconfilename, 'w');
    fwrite($savefile, $sourcecode);
    fclose($savefile);

Answer 1

试试这个：

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

Answer 2

选项＃1

您可以使用CURLOPT_FILE选项直接将文件显示给curl进行下载，而不是将二进制/原始数据选择到变量中然后再写入。

这是功能：

// takes URL of image and Path for the image as parameter
function download_image1($image_url, $image_file){
    $fp = fopen ($image_file, 'w+');              // open file handle

    $ch = curl_init($image_url);
    // curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // enable if you want
    curl_setopt($ch, CURLOPT_FILE, $fp);          // output to file
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
    curl_setopt($ch, CURLOPT_TIMEOUT, 1000);      // some large value to allow curl to run for a long time
    curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0');
    // curl_setopt($ch, CURLOPT_VERBOSE, true);   // Enable this line to see debug prints
    curl_exec($ch);

    curl_close($ch);                              // closing curl handle
    fclose($fp);                                  // closing file handle
}

以下是你应该如何称呼它：

// test the download function
download_image1("http://www.gravatar.com/avatar/10773ae6687b55736e171c038b4228d2", "local_image1.jpg");

选项＃2

现在，如果你想下载一个非常大的文件，那么上述功能可能不会变得方便。这次您可以使用以下功能来处理大文件。此外，您可以根据需要打印进度（以%或任何其他格式）。下面的函数是使用callback函数实现的，该函数将一大块数据写入文件中以进行下载。

// takes URL of image and Path for the image as parameter
function download_image2($image_url){
    $ch = curl_init($image_url);
    // curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // enable if you want
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
    curl_setopt($ch, CURLOPT_TIMEOUT, 1000);      // some large value to allow curl to run for a long time
    curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0');
    curl_setopt($ch, CURLOPT_WRITEFUNCTION, "curl_callback");
    // curl_setopt($ch, CURLOPT_VERBOSE, true);   // Enable this line to see debug prints
    curl_exec($ch);

    curl_close($ch);                              // closing curl handle
}

/** callback function for curl */
function curl_callback($ch, $bytes){
    global $fp;
    $len = fwrite($fp, $bytes);
    // if you want, you can use any progress printing here
    return $len;
}

以下是如何调用此函数：

// test the download function
$image_file = "local_image2.jpg";
$fp = fopen ($image_file, 'w+');              // open file handle
download_image2("http://www.gravatar.com/avatar/10773ae6687b55736e171c038b4228d2");
fclose($fp);                                  // closing file handle

Answer 3

Komang答案的改进版本（添加referer和用户代理，检查是否可以写文件），如果没有则返回true，如果有错误则返回false：

public function downloadImage($url,$filename){
    if(file_exists($filename)){
        @unlink($filename);
    }
    $fp = fopen($filename,'w');
    if($fp){
        $ch = curl_init ($url);
        curl_setopt($ch, CURLOPT_HEADER, 0);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1);
        $result = parse_url($url);
        curl_setopt($ch, CURLOPT_REFERER, $result['scheme'].'://'.$result['host']);
        curl_setopt($ch, CURLOPT_USERAGENT,'Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0');
        $raw=curl_exec($ch);
        curl_close ($ch);
        if($raw){
            fwrite($fp, $raw);
        }
        fclose($fp);
        if(!$raw){
            @unlink($filename);
            return false;
        }
        return true;
    }
    return false;
}

Answer 4

这是最简单的实施方式。

function downloadFile($url, $path)
{
    $newfname = $path;
    $file = fopen($url, 'rb');
    if ($file) {
        $newf = fopen($newfname, 'wb');
        if ($newf) {
            while (!feof($file)) {
                fwrite($newf, fread($file, 1024 * 8), 1024 * 8);
            }
        }
    }
    if ($file) {
        fclose($file);
    }
    if ($newf) {
        fclose($newf);
    }
}

Answer 5

如果您想从https 下载图像：

$output_filename = 'output.png'; $host = "https://.../source.png"; // <-- Source image url (FIX THIS) $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $host); curl_setopt($ch, CURLOPT_VERBOSE, 1); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_AUTOREFERER, false); curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1); curl_setopt($ch, CURLOPT_HEADER, 0); curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0); // <-- don't forget this curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0); // <-- and this $result = curl_exec($ch); curl_close($ch); $fp = fopen($output_filename, 'wb'); fwrite($fp, $result); fclose($fp);

使用curl PHP从url保存图像

5 个答案: