使用curl / php上传图片

Question

I am trying to upload image using php/curl on a website using curl/php. The website uses ajax/flash to upload images to external server. When I upload an image manually on the website, using firebug, I just receive the response (with permanent link) if the image is successfully uploaded but I don't see what parameters and data were posted and where exactly.

web url where image needs to be uploaded:

http://tinyurl.com/bp779wx

How do I find out what parameters need to be sent in order to get the image uploaded successfully on the website?

Answer 1

The specific uploader you have mentioned extracts the epsToken variable from the following URL, then uses it as a parameter to upload the file.

http://johannesburg.gumtree.co.za/c-GetEpsToken

In my case, the token was:

1:b6ac30fa715a395cf728ac29847b2516f701a8f291fd5243d5153eae41c10636

You can see the full POST data for the upload request I made here . Keep in mind that this is a multipart/form-data request so you may need to adjust your curl/PHP code to support that.

Basically, the following parameters were supplied via the POST request:

Filename = Image.png 
b = 18 
s = 1C5000 
n = k 
a = 1:b6ac30fa715a395cf728ac29847b2516f701a8f291fd5243d5153eae41c10636
v = k 
r = 0 
u = the actual image, sent as a multipart stream 
Upload = Submit Query

I suggest you analyse the other parameters and use the code from the other answers in order to successfully upload the image.

Answer 2

Upload image with PHP and cURL.

function curl_post_request($url, $data, $referer='') {
$data = http_build_query($data); // seems to be required arrays should'nt be supported  ? whatever.
$c = curl_init();
curl_setopt($c, CURLOPT_URL, $url);
curl_setopt($c, CURLOPT_RETURNTRANSFER, true);
curl_setopt($c, CURLOPT_HEADER, true);
curl_setopt($c, CURLOPT_POST, true);
curl_setopt($c, CURLOPT_POSTFIELDS, $data);
curl_setopt($c, CURLOPT_REFERER, $referer);
curl_setopt($c, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.1) Gecko/20061204 Firefox/2.0.0.1");
curl_setopt($c, CURLOPT_HEADER, $headers); 
curl_setopt($c, CURLINFO_HEADER_OUT, true);
curl_setopt($c, CURLOPT_VERBOSE, true);
$output = curl_exec($c);
var_dump(curl_getinfo($c, CURLINFO_HEADER_OUT));
//var_dump($data);
if($output === false) trigger_error('Erreur curl : '.curl_error($c),E_USER_WARNING);
curl_close($c);
return $output;
}

if(isset($_GET['GO'])) {

$data = array(
'pic1' => "@".realpath('image.jpg'),
'postedvar1' => 'test1',
'postedvar2' => 'test2'
 );
$url = 'http://localhost/test/index.php';
$a = curl_post_request($url, $data);
var_dump($a);

} else {

print_r($_POST);
print_r($_FILES);
}

Upload image using CURL + PHP via remote form

 $info = array('test title','1234','virginia','@'.realpath('e:\wamp  
 \www\1.jpg'),'@'.realpath('e:\wamp\www\2.jpg'),'@'.realpath('e:\wamp\www
 \3.jpg'),'@'.realpath('e:\wamp\www\4.jpg'),'test description');
  $post->postAd($url, $info);

Also Please read this

http://www.maheshchari.com/upload-image-file-to-remote-server-with-php-curl/

And see this link

http://blog.smileylover.com/remote-upload-to-imageshackus-with-phpcurl/

And

http://blogs.digitss.com/php/curl-php/posting-or-uploading-files-using-curl-with-php/

Answer 3

Some problem with the site's image uploaded - it just pops up an error

There was an error uploading your picture. Please check the image size and dimension and try again. If you continue to have issues, you can switch to the basic image loader.

for every type of images and basic image loader is also not actually available!.