Google PageSpeed Insights API Screenshot to file

Question

I have been trying to retrieve the screenshot from the API but when I decode the image and save it I get a broken image. Below is the code I am using. I created a tinyurl to a sample file containing a google response if you wish to test it.

$name = 'test';
$result = file_get_contents('http://tinyurl.com/q4smyod'); 
$result = json_decode($result, true);
$decoded=base64_decode($result['screenshot']['data']);
file_put_contents('img/'.$name.'.jpg',$decoded);

Answer 1

As mentioned in my comment the issue is being caused by an error on googles encryption when working with the php api. If you are having this issue simply use the following replace functions to fix the encoding.

$data    = str_replace('_','/',$result['screenshot']['data']);
$data    = str_replace('-','+',$data);
$decoded = base64_decode($data);