Bug #69198 [NEW]: Compact function generate array with length but no content

From: jrbasso at gmail dot com Operating system: Any PHP version: master-Git-2015-03-07 (Git) Package: Arrays related Bug Type: Bug Bug description:Compact function generate array with length but no content Description: ------------ When using the compact function with some variable that is defined on the code but not defined at the moment of the function call cause the generation of an array with length but no content. Doing a regular compact call to a name that doesn't exist but also never attempted to define in the same scope doesn't cause the issue. ie, a regular call to compact('foo') works fine if $foo is not defined or defined conditionally in the same scope. You can check the compact working when the variable is not on the scope: http://3v4l.org/k6bt1 And here is an example when it is defined on the scope, but conditionally will never be called: http://3v4l.org/9Z3aP Test script: --------------- if (false) { $willNeverBeDefined = true; } $result = compact('willNeverBeDefined'); var_dump($result, empty($result), $result === array()); Expected result: ---------------- array(0) { } bool(true) bool(true) Actual result: -------------- array(1) { } bool(false) bool(false) -- Edit bug report at https://bugs.php.net/bug.php?id=69198&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=69198&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=69198&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=69198&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=69198&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=69198&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=69198&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=69198&r=needscript Try newer version: https://bugs.php.net/fix.php?id=69198&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=69198&r=support Expected behavior: https://bugs.php.net/fix.php?id=69198&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=69198&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=69198&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=69198&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=69198&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=69198&r=dst IIS Stability: https://bugs.php.net/fix.php?id=69198&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=69198&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=69198&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=69198&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=69198&r=mysqlcfg