Bug #65903 [NEW]: Reference type property unexpectedly converted to value type property

From: veg at tut dot by Operating system: Windows 7 Pro SP1 x86 PHP version: 5.5.4 Package: Scripting Engine problem Bug Type: Bug Bug description:Reference type property unexpectedly converted to value type property Description: ------------ I've used a little code snippet to convert property from value type to reference type. It's described here: http://www.php.net/manual/en/language.oop5.cloning.php It's very useful practice when you want to share some properties between all clones. But it works with some bugs. When you try to read a reference type property of object without clones, this property unexpectedly converted to value type property. Test script: --------------- <?php header('content-type: text/plain; charset=utf-8'); class demo { public $n = 0; function __construct() { $this->n =& $this->n; } function magic() { if ($this->n) return; } function set($n) { $this->n = $n; } } // Outputs 1 = 1 as expected $a1 = new demo(); $b1 = clone $a1; $a1->magic(); $b1->set(1); echo "{$a1->n} = {$b1->n}\n"; // Outputs 0 = 1 (magic() method is called a little earlier) $a2 = new demo(); $a2->magic(); $b2 = clone $a2; $b2->set(1); echo "{$a2->n} = {$b2->n}\n"; Expected result: ---------------- 1 = 1 1 = 1 Actual result: -------------- 1 = 1 0 = 1 -- Edit bug report at https://bugs.php.net/bug.php?id=65903&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=65903&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=65903&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=65903&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=65903&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=65903&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=65903&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=65903&r=needscript Try newer version: https://bugs.php.net/fix.php?id=65903&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=65903&r=support Expected behavior: https://bugs.php.net/fix.php?id=65903&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=65903&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=65903&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=65903&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=65903&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=65903&r=dst IIS Stability: https://bugs.php.net/fix.php?id=65903&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=65903&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=65903&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=65903&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=65903&r=mysqlcfg