#46606 [NEW]: Returning by Reference Increases Performance

From: php at info-svc dot com Operating system: Linux PHP version: Irrelevant PHP Bug Type: Documentation problem Bug description: Returning by Reference Increases Performance Description: ------------ I'm reporting a documentation comment that was rejected but should be valid. note 87076 rejected and deleted from language.references.return by notes editor danbrown ----- Copy of your note below ----- "Do not use return-by-reference to increase performance" This is not accurate. If you want PHP to return a string that was passed-by-reference without making a copy of it then you must also return-by-reference to increase performance. Robert Chapin Chapin Information Services Reproduce code: --------------- $a = 'world'; $b = escape($a); $b .= '3'; echo $a; function escape(&$hello) { $hello .= '2'; return $hello; } Expected result: ---------------- world23 Actual result: -------------- world2 -- Edit bug report at http://bugs.php.net/?id=46606&edit=1 -- Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=46606&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=46606&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=46606&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=46606&r=fixedcvs Fixed in CVS and need be documented: http://bugs.php.net/fix.php?id=46606&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=46606&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=46606&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=46606&r=needscript Try newer version: http://bugs.php.net/fix.php?id=46606&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=46606&r=support Expected behavior: http://bugs.php.net/fix.php?id=46606&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=46606&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=46606&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=46606&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=46606&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=46606&r=dst IIS Stability: http://bugs.php.net/fix.php?id=46606&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=46606&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=46606&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=46606&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=46606&r=mysqlcfg