Bug #71835 [NEW]: json_encode sometimes incorrectly detects recursion with JsonSerializable

From: Date: Wed, 16 Mar 2016 02:00:53 +0000
Subject: Bug #71835 [NEW]: json_encode sometimes incorrectly detects recursion with JsonSerializable
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-199855@lists.php.net to get a copy of this message
From:             icarpenter at leadid dot com
Operating system: 
PHP version:      7.0.4
Package:          JSON related
Bug Type:         Bug
Bug description:json_encode sometimes incorrectly detects recursion with JsonSerializable

Description:
------------
If a class that implements JsonSerializable returns an array of
get_object_vars($this) in its jsonSerialize method, and if that class is
in an array that is json_encode'd, JSON_ERROR_RECURSION is returned.

This does not seem to happen if jsonSerialize returns
get_object_vars($this) not enclosed an array, nor does it seem to happen
if the object itself is json_encode'd

Test script:
---------------
https://3v4l.org/OoR7D

Expected result:
----------------
string(4) "[[]]"
bool(false)
string(6) "[[[]]]"
bool(false)
string(2) "[]"
bool(false)
string(4) "[[]]"
bool(false)

Actual result:
--------------
string(4) "[[]]"
bool(false)
bool(false)
bool(true)
string(2) "[]"
bool(false)
string(4) "[[]]"
bool(false)


-- 
Edit bug report at https://bugs.php.net/bug.php?id=71835&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=71835&r=trysnapshot54
Try a snapshot (PHP 5.5):   https://bugs.php.net/fix.php?id=71835&r=trysnapshot55
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=71835&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=71835&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=71835&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=71835&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=71835&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=71835&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=71835&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=71835&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=71835&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=71835&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=71835&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=71835&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=71835&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=71835&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=71835&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=71835&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=71835&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=71835&r=mysqlcfg



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