From: sagawa at sohgoh dot net
Operating system: FreeBSD, SunOS
PHP version: 4.3.9
PHP Bug Type: Feature/Change Request
Bug description: need unset support for putenv
Description:
------------
PHP doesn't support unsetenv, therefore I can't unset environment
variable.
On Linux box, putenv C function supports putenv("FOO") syntax that vanish
FOO environment variable. But other OS (such as SunOS, FreeBSD) is not.
Therefore please add putenv("FOO") feature to others in PHP5.
Note: please distinguish empty variable (= getenv returns "") from
undefined one (= getenv returns false).
Reproduce code:
---------------
<?php
echo "OS: ",PHP_OS,"\n";
echo "foo is "; var_dump(getenv("FOO"));
echo "---\n";
echo "putenv(\"FOO=bar\"): "; var_dump(putenv("FOO=bar"));
echo "foo is "; var_dump(getenv("FOO"));
echo "---\n";
echo "putenv(\"FOO=baz\"): "; var_dump(putenv("FOO=baz"));
echo "foo is "; var_dump(getenv("FOO"));
echo "---\n";
echo "putenv(\"FOO\"): "; var_dump(putenv("FOO"));
echo "foo is "; var_dump(getenv("FOO"));
?>
Expected result:
----------------
% php envtest.php
OS: Linux
foo is bool(false)
---
putenv("FOO=bar"): bool(true)
foo is string(3) "bar"
---
putenv("FOO=baz"): bool(true)
foo is string(3) "baz"
---
putenv("FOO"): bool(true)
foo is bool(false)
% env FOO=foo php envtest.php
OS: Linux
foo is string(3) "foo"
---
putenv("FOO=bar"): bool(true)
foo is string(3) "bar"
---
putenv("FOO=baz"): bool(true)
foo is string(3) "baz"
---
putenv("FOO"): bool(true)
foo is bool(false)
Actual result:
--------------
% php envtest.php
OS: FreeBSD
foo is bool(false)
---
putenv("FOO=bar"): bool(true)
foo is string(3) "bar"
---
putenv("FOO=baz"): bool(true)
foo is string(3) "baz"
---
putenv("FOO"): bool(false)
foo is bool(false)
% env FOO=foo php envtest.php
OS: FreeBSD
foo is string(3) "foo"
---
putenv("FOO=bar"): bool(true)
foo is string(3) "bar"
---
putenv("FOO=baz"): bool(true)
foo is string(3) "baz"
---
putenv("FOO"): bool(false)
foo is string(3) "baz"
% php envtest.php
OS: SunOS
foo is bool(false)
---
putenv("FOO=bar"): bool(true)
foo is string(3) "bar"
---
putenv("FOO=baz"): bool(true)
foo is string(3) "baz"
---
putenv("FOO"): bool(true)
foo is bool(false)
% env FOO=foo php envtest.php
OS: SunOS
foo is string(3) "foo"
---
putenv("FOO=bar"): bool(true)
foo is string(3) "bar"
---
putenv("FOO=baz"): bool(true)
foo is string(3) "baz"
---
putenv("FOO"): bool(true)
foo is string(3) "foo"
--
Edit bug report at http://bugs.php.net/?id=30778&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=30778&r=trysnapshot4
Try a CVS snapshot (php5.0):
http://bugs.php.net/fix.php?id=30778&r=trysnapshot50
Try a CVS snapshot (php5.1):
http://bugs.php.net/fix.php?id=30778&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=30778&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=30778&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=30778&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=30778&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=30778&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=30778&r=support
Expected behavior: http://bugs.php.net/fix.php?id=30778&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=30778&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=30778&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=30778&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=30778&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=30778&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=30778&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=30778&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=30778&r=float
MySQL Configuration Error: http://bugs.php.net/fix.php?id=30778&r=mysqlcfg
