trying to get property of non object curl issue

I have a curl setup as follows to access a json object

$ch = curl_init();

 curl_setopt($ch, CURLOPT_URL, "http://sitename.com");

 curl_setopt($ch, CURLOPT_HEADER, 0);

 curl_setopt($ch, CURLO开发者_运维百科PT_RETURNTRANSFER, true);

 curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);

 curl_setopt($ch, CURLOPT_COOKIEJAR, 'cookiefilename.txt');


 curl_setopt($ch, CURLOPT_HTTPHEADER, array('Host:sitename.com'));

 $output = curl_exec($ch);

 curl_close($ch);
 $output = json_decode($output);
 echo $output->property;

I get the error 'trying to access property of non object'.

The only time you are trying to access a property of an object, is here:

echo $output->property;

So do a var_dump($output) to see what is happening before and after the previous line:

var_dump($output)
$output = json_decode($output);
var_dump($output)

You haven't said what you've tried or looked into.

The most likely thing would seem to be that the site isn't returning valid JSON, and so json_decode is returning NULL.

Alternately, perhaps what's being returned is valid JSON, but not an object (e.g., true or false, although at the top level a JSON package should always be an object or an array).