Bug #70555 [NEW]: fun_get_arg() on unsetted vars return UNKNOW

From: laruence Operating system: PHP version: 7.0.0RC3 Package: Scripting Engine problem Bug Type: Bug Bug description:fun_get_arg() on unsetted vars return UNKNOW Description: ------------ see test script below: Test script: --------------- <?php function a($a) { unset($a); var_dump(func_get_arg(0)); } a("1st"); ?> Expected result: ---------------- NULL or "1st" Actual result: -------------- UNKNOWN:0 -- Edit bug report at https://bugs.php.net/bug.php?id=70555&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=70555&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=70555&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=70555&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=70555&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=70555&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=70555&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=70555&r=needscript Try newer version: https://bugs.php.net/fix.php?id=70555&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=70555&r=support Expected behavior: https://bugs.php.net/fix.php?id=70555&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=70555&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=70555&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=70555&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=70555&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=70555&r=dst IIS Stability: https://bugs.php.net/fix.php?id=70555&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=70555&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=70555&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=70555&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=70555&r=mysqlcfg