Save a image from a URL - php

Question

I want to grab a set of images using the URL in PHP. I've tried using file_get_contents and curl. Below is the code that I have tried using.
$image = file_get_contents('http://user:pwd#server/directory/images/image1.jpg');
file_put_contents('D:/images/image1.jpg', $image);
and
$url = 'http://server/directory/images/image1.jpg';
$localFilePath = 'D:/images/image1.jpg';
$ch = curl_init ($url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_BINARYTRANSFER,1);
curl_setopt($ch, CURLOPT_USERPWD, "user:pwd");
$raw = curl_exec($ch);
curl_close ($ch);
if(file_exists($localFilePath)){
unlink($localFilePath);
}
$fp = fopen($localFilePath,'wb');
fwrite($fp, $raw);
fclose($fp);
In both cases, I am getting the following error:
401 - Unauthorized : Access is denied due to invalid credentials.
The password has a special character. I can't change it to a plain password, as the password policies don't allow it.

Answer 1

I Don't see the place where you tell CURL to use AUTHentication:
curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
I think it also might be because you're not using cookies, enable them:
curl_setopt($ch, CURLOPT_COOKIEJAR, "cookies.txt");

Answer 2

The equivalent of this line is
curl_setopt($ch, CURLOPT_USERPWD, "user:pwd");
This one, and you can try this by replacing your one
curl_setopt($ch, CURLOPT_HTTPHEADER,
array("Authorization: Basic ".base64_encode("user:pwd")));
// also you can try by changing + / characters into _-
Now come to the point. Base64 has several implementation based on RFC. For example : RFC3538. Different library or different language implemented different RFC for base64 encoding/decoding. For example at some implementation it uses + and / character and some use the _ and - character.
So lets say your curl is sending the base64 string for the authorization is xyz+12= but your server is expecting the string to be as xyz_12=. So it will obviously fail to decode.