Deezer API and file_put_contents - php

Question

I've got this script for saving albumart from Deezer to my server. The albumart url is alright, you can try yourself. And it does make a file but it's not the image I would like to see but a corrupted file. I am guessing it has something to do with the (I guess) 301 they provide when you visit the original link you get from the API. But I don't know hot to solve that problem if it is that.
<?php
// Deezer
$query = 'https://api.deezer.com/2.0/search?q=madonna';
$file = file_get_contents($query);
$parsedFile = json_decode($file);
$albumart = $parsedFile->data[0]->artist->picture;
$artist = $parsedFile->data[0]->artist->name;
$dir = dirname(__FILE__).'/albumarts/'.$artist.'.jpg';
file_put_contents($dir, $albumart);
?>

Answer 1

Two issues:
1) $albumart contains a URL (in your case http://api.deezer.com/2.0/artist/290/image). You need to do file_get_contents on that url.
<?php
// Deezer
$query = 'https://api.deezer.com/2.0/search?q=madonna';
$file = file_get_contents($query);
$parsedFile = json_decode($file);
$albumart = $parsedFile->data[0]->artist->picture;
$artist = $parsedFile->data[0]->artist->name;
$dir = dirname(__FILE__).'/albumarts/'.$artist.'.jpg';
file_put_contents($dir, file_get_contents($albumart)); // << Changed this line
?>
2) The redirect may be a problem (as you suggest). To get around that, use curl functions.
// Get file using curl.
// NOTE: you can add other options, read the manual
$ch = curl_init($albumart);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$data = curl_exec($ch);
curl_close($ch);
// Save output
file_put_contents($dir, $data);
Note, you should use curl() for handling getting content from external URLs as a matter of principal. Safer and you have better control. Some hosts also block accessing external URLS using file_get_contents anyway.

Answer 2

Why not get the headers for the file (the headers contain the redirect).
$headerdata=get_headers($albumart);
echo($headerdata[4]);//show the redirect (for testing)
$actualloc=str_replace("Location: ","",$headerdata[4]);//remove the 'location' header string
file_put_contents($dir, $actualloc);
I think it's the 4th record in the header, if not check it with a print_r($hearderdata);
this will return the proper url of the image file.