Req #72252 [NEW]: change unset() to return true if the variable existed, or false if it did not

From: mvrk887 at hotmail dot com Operating system: PHP version: Irrelevant Package: PHP Language Specification Bug Type: Feature/Change Request Bug description:change unset() to return true if the variable existed, or false if it did not Description: ------------ as in summary, would be nice to have to avoid unnecessary lookups in userland -- Edit bug report at https://bugs.php.net/bug.php?id=72252&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=72252&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=72252&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=72252&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=72252&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=72252&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=72252&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=72252&r=needscript Try newer version: https://bugs.php.net/fix.php?id=72252&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=72252&r=support Expected behavior: https://bugs.php.net/fix.php?id=72252&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=72252&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=72252&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=72252&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=72252&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=72252&r=dst IIS Stability: https://bugs.php.net/fix.php?id=72252&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=72252&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=72252&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=72252&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=72252&r=mysqlcfg