Bug #71868 [NEW]: Environment variables with no value are filtered out by proc_open()

From: enrico dot stahn at gmail dot com Operating system: Debian PHP version: 5.6.19 Package: Program Execution Bug Type: Bug Bug description:Environment variables with no value are filtered out by proc_open() Description: ------------ Empty environment variables passed to proc_open are filtered out. Test script: --------------- <?php // process.php $env = ['FOO' => 'abc', 'BAR' => '']; $pipes = []; $process = proc_open('./env.php', [], $pipes, pwd, $env); proc_close($process); #!/usr/bin/php <?php // env.php var_dump($_SERVER['FOO']); var_dump($_SERVER['BAR']); php process.php will output: string(3) "abc" PHP Notice: Undefined index: BAR in /Users/kuba/Projects/symfony/issues/env.php on line 6 NULL -- Edit bug report at https://bugs.php.net/bug.php?id=71868&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=71868&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=71868&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=71868&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=71868&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=71868&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=71868&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=71868&r=needscript Try newer version: https://bugs.php.net/fix.php?id=71868&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=71868&r=support Expected behavior: https://bugs.php.net/fix.php?id=71868&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=71868&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=71868&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=71868&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=71868&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=71868&r=dst IIS Stability: https://bugs.php.net/fix.php?id=71868&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=71868&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=71868&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=71868&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=71868&r=mysqlcfg