#40797 [NEW]: empty() breaks when overloading with __get

From: stephan_schmidt at usa dot com Operating system: Windows 200X PHP version: 5.2.1 PHP Bug Type: Class/Object related Bug description: empty() breaks when overloading with __get Description: ------------ When overloading with __get() to grab an index of an associative array inside an object, the overloaded variable returns 'false' when tested with empty() whether the value is empty or not (see Example 2 for incorrect results). Testing overloaded variables that were not in an associative array with empty() returns the expected results (Example 3). Reproduce code: --------------- <? class A { public $myArray = array('nonEmptyVar' => 5, 'emptyVar' => ''); function __get($var) { return $this->myArray[$var]; } } class B { public $nonEmptyVar = 5; public $emptyVar = ''; function __get($var) { return $this->$var; } } $a = new A(); $b = new B(); echo '<p>Example 1:<br>'; echo empty($a->myArray['nonEmptyVar']) ? 'empty' : 'not empty'; echo '<br>'; echo empty($a->myArray['emptyVar']) ? 'empty' : 'not empty'; echo '<p>Example 2:<br>'; var_dump($a->nonEmptyVar); echo empty($a->nonEmptyVar) ? 'empty' : 'not empty'; echo '<br>'; var_dump($a->emptyVar); echo empty($a->emptyVar) ? 'empty' : 'not empty'; echo '<p>Example 3:<br>'; echo empty($b->nonEmptyVar) ? 'empty' : 'not empty'; echo '<br>'; echo empty($b->emptyVar) ? 'empty' : 'not empty'; ?> Expected result: ---------------- Example 1: not empty empty Example 2: int(5) not empty string(0) "" empty Example 3: not empty empty Actual result: -------------- Example 1: not empty empty Example 2: int(5) empty string(0) "" empty Example 3: not empty empty -- Edit bug report at http://bugs.php.net/?id=40797&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=40797&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=40797&r=trysnapshot52 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=40797&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=40797&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=40797&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=40797&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=40797&r=needscript Try newer version: http://bugs.php.net/fix.php?id=40797&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=40797&r=support Expected behavior: http://bugs.php.net/fix.php?id=40797&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=40797&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=40797&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=40797&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=40797&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=40797&r=dst IIS Stability: http://bugs.php.net/fix.php?id=40797&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=40797&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=40797&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=40797&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=40797&r=mysqlcfg