Bug #75710 [NEW]: single-char vars get lost
From: benjamin dot roth at jaumo dot com
Operating system: Ubuntu
PHP version: 7.1.12
Package: Scripting Engine problem
Bug Type: Bug
Bug description:single-char vars get lost
Description:
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1. I am not 100% if I got the right category for that.
2. I was NOT able to reproduce that intentionally but we obsorved that
many, many times in production.
3. This only happens in long-running PHP environments. It does NOT
happen with PHPFPM as every request creates a separate PHP runtime. Our
observations have been made when serving PHP requests with amp/aerys.
4. It does not happen in EVERY long-running process, but WHEN it
happens, the current process is affected until it dies
Symptom:
Single-char vars are instantly dropped / unset.
E.g.
----
$f = new Foo();
$f->bar();
----
Results in
----
[E_NOTICE] Undefined variable: f
----
and
----
Call to a member function bar() on null
----
This does never happen when using variable names with a couple of chars.
I didn't find out the exact limit, but as of now I have only seen
single-char-vars in logs.
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Edit bug report at https://bugs.php.net/bug.php?id=75710&edit=1
--
Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=75710&r=trysnapshot54
Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=75710&r=trysnapshot55
Try a snapshot (trunk): https://bugs.php.net/fix.php?id=75710&r=trysnapshottrunk
Fixed in SVN: https://bugs.php.net/fix.php?id=75710&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=75710&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=75710&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=75710&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=75710&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=75710&r=support
Expected behavior: https://bugs.php.net/fix.php?id=75710&r=notwrong
Not enough info: https://bugs.php.net/fix.php?id=75710&r=notenoughinfo
Submitted twice: https://bugs.php.net/fix.php?id=75710&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=75710&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=75710&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=75710&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=75710&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=75710&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=75710&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=75710&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=75710&r=mysqlcfg
Thread (7 messages)
- benjamin dot roth at jaumo dot com