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Bug #50867 json_encode can't handle empty string keys
Submitted: 2010-01-27 22:32 UTC Modified: 2010-01-28 08:25 UTC
From: r at rcrowley dot org Assigned:
Status: Not a bug Package: JSON related
PHP Version: 5.3.1 OS: Linux
Private report: No CVE-ID: None
 [2010-01-27 22:32 UTC] r at rcrowley dot org
Description:
------------
The specification outlined at http://json.org/ indicates that the empty 
string is a perfectly valid key in a JSON data structure.  JSON 
implementations in Python and Ruby agree.  PHP appears to go out of its 
way to handle the empty string as as key in a non-standard way.

Reproduce code:
---------------
$ php -r 'echo json_encode(json_decode("{\"\":\"foo\"}")), "\n";'
{"_empty_":"foo"}
$

Expected result:
----------------
I expect to see exactly the same output from PHP as seen from Ruby and 
Python:

$ ruby -rjson -e 'puts JSON.parse("{\"\":\"foo\"}").to_json'
{"":"foo"}
$ python -c 'import json; 
print(json.dumps(json.loads("{\"\":\"foo\"}")))'
{"": "foo"}
$

Actual result:
--------------
$ php -r 'echo json_encode(json_decode("{\"\":\"foo\"}")), "\n";'
{"_empty_":"foo"}
$

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 [2010-01-28 08:25 UTC] jani@php.net
It can not work in PHP since you can not have empty object property name. 
 
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