#46458 [NEW]: Tricky, undocumented trait of global keyword

From: gmtfn at yahoo dot com Operating system: Linux PHP version: Irrelevant PHP Bug Type: Documentation problem Bug description: Tricky, undocumented trait of global keyword Description: ------------ Qualifying a variable with the keyword global has a tricky but undocumented effect -- it doesn't merely allow code in a function to access global variable, but it actually creates global variables. This should be clearly described in the manual. Reproduce code: --------------- function main() { global $num; $num = 10; test(); } function test() { $number = $GLOBALS['num']; echo "num = $number"; } Expected result: ---------------- num = because $num isn't declared outside all functions Actual result: -------------- num = 10 -- Edit bug report at http://bugs.php.net/?id=46458&edit=1 -- Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=46458&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=46458&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=46458&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=46458&r=fixedcvs Fixed in CVS and need be documented: http://bugs.php.net/fix.php?id=46458&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=46458&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=46458&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=46458&r=needscript Try newer version: http://bugs.php.net/fix.php?id=46458&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=46458&r=support Expected behavior: http://bugs.php.net/fix.php?id=46458&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=46458&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=46458&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=46458&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=46458&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=46458&r=dst IIS Stability: http://bugs.php.net/fix.php?id=46458&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=46458&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=46458&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=46458&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=46458&r=mysqlcfg