Error when get value from json_decode() in php?

问题

I have a sample code:

$description = '{"2G Network":"GSM 850 / 900 / 1800 / 1900 ","3G Network":"HSDPA 850 / 900 / 1700 / 1900 / 2100 "}';
$data = json_decode($description);
echo $data->2G Network;

 // OR echo $data['2G Network'];

result is error, how to fix it !

回答1:

Try this:

echo $data->{'2G Network'};

The problem wasn't with JSON, but that you had a space in the object property you were trying to access. If you use curly braces { }, then you can use strings to name the property you want to get/set.

回答2:

Brad solution is perfect, and if you want similar from an array you can do it like:

$description = '{"2G Network":"GSM 850 / 900 / 1800 / 1900 ","3G Network":"HSDPA 850 / 900 / 1700 / 1900 / 2100 "}';
$data = json_decode($description, true);
echo $data['2G Network'];

回答3:

You can either remove the space between 2G and Network or decode the json to an array using json_decode($description, true)

回答4:

you may call functions to remove the spaces in the JSON

see below http://www.pukkared.com/2010/02/removing-extra-white-space-before-returning-json-data/

来源：https://stackoverflow.com/questions/11480954/error-when-get-value-from-json-decode-in-php