#50739 [NEW]: === could be a bit smarter with arrays...

From: zhalassy at loginet dot hu Operating system: Irrelevant PHP version: 5.2.12 PHP Bug Type: Arrays related Bug description: === could be a bit smarter with arrays... Description: ------------ At the moment, you can't do things like: $GLOBALS === $GLOBALS; or $a = array('a' => &$a); $a === $a['a']; both causes fatal error claiming too deep nesting level. I find it rather strange that you can use references, but you can't test if something is referencing the same thing or not... It would be nice to have some ==== or is_same(&$a,&$b) function which would just do a lookup in the symbol table and if the two variables referencing the same thing it would return true, false otherwise. Reproduce code: --------------- $a = is_same($GLOBALS,$GLOBALS); $x = array('x' => &$x); $b = is_same($x, $x['x']); $x1 = array('c' => &$x1); $x2 = array('c' => &$x2); //same layout, but not the same variable; $c = is_same($x1,$x2); $y1 = "test"; $y2 = $y1; /* plain assignement, maybe same till y1 or y2 not changed, but is_same() shouldn't get affected by optimization behaviour */ $d = is_same($y1,$y2); $z1 = "test2"; $z2 = &$z1; //or $z2 =& $z1; $e = is_same($z1,$z2); Expected result: ---------------- $a === true; $b === true; $c === false; $d === false; $e === true; Actual result: -------------- No way to do this ATM (AFAIK). But please tell me if i didn't read the documentation properly... -- Edit bug report at http://bugs.php.net/?id=50739&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=50739&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=50739&r=trysnapshot53 Try a snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=50739&r=trysnapshot60 Fixed in SVN: http://bugs.php.net/fix.php?id=50739&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=50739&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=50739&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=50739&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=50739&r=needscript Try newer version: http://bugs.php.net/fix.php?id=50739&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=50739&r=support Expected behavior: http://bugs.php.net/fix.php?id=50739&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=50739&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=50739&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=50739&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=50739&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=50739&r=dst IIS Stability: http://bugs.php.net/fix.php?id=50739&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=50739&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=50739&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=50739&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=50739&r=mysqlcfg