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Bug #19613 putenv("VAR=") does not empty VAR on win32
Submitted: 2002-09-26 08:32 UTC Modified: 2003-07-24 03:10 UTC
From: six at aegis-corp dot org Assigned: sfox
Status: Closed Package: Other web server
PHP Version: 4.2.3 OS: Win2K
Private report: No CVE-ID:
 [2002-09-26 08:32 UTC] six at aegis-corp dot org
It appears that in Win32 (with php-cli.exe), the putenv function works quite strangely.

When you call putenv("VAR="), this sould empty the "VAR" environment variable. And it almost does it, because a call to getenv("VAR") will return an empty string. However, the real env is not changed and VAR is still set to its old value.

This small script (and its output) demonstrate the problem :

echo getenv("TEST")."\n"; // "ZOB1"
system("echo %TEST%");    // "ZOB1"
echo getenv("TEST")."\n"; // ""
system("echo %TEST%");    // "ZOB1" <- should be empty !
echo getenv("TEST")."\n"; // "ZOB2"
system("echo %TEST%");    // "ZOB2"



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 [2003-06-23 02:10 UTC] ruta at teltec dot de
Same Problem on WIN 2000 Server with Apache2. Thanks...


Thomas Ruta
 [2003-07-23 16:29 UTC]
Patch sent to internals@
 [2003-07-24 03:10 UTC]
This bug has been fixed in CVS.

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