From: packard_bell_nec at hotmail dot com Operating system: windows server 2003 r2 PHP version: 5.2.5 PHP Bug Type: Variables related Bug description: converting null variable to object type will make the variable non empty
Description: ------------ When I write the codes concerning type conversion, I found the entitled "bug". Then, I check the documentation, and I found the statement "an object with zero member variables (PHP 4 only) is considered FALSE" in~ http://php.net/manual/en/language.types.boolean.php However, I am NOT going to ask for reopening the above "feature". Instead, I am going to ask for correcting the "bug" so that "an object with class stdClass and zero member variables is considered FALSE". The behavior of empty() should also be changed accordingly. The extensions that I used: [PHP_GD2] extension=php_gd2.dll [PHP_MBSTRING] extension=php_mbstring.dll [PHP_MCRYPT] extension=php_mcrypt.dll [PHP_MYSQL] extension=php_mysql.dll [PHP_MYSQLI] extension=php_mysqli.dll [Zend] zend_extension_ts="C:\Program Files\PHP\lib\ZendExtensionManager.dll" zend_extension_manager.optimizer_ts="C:\Program Files\PHP\lib\Optimizer-3.3.0" zend_extension_manager.debug_server_ts="C:\Program Files\PHP\lib\Debugger-5.2.10" Reproduce code: --------------- $foo = null; settype($foo, 'object'); $cv_foo = get_class_vars(get_class($foo)); $ov_foo = get_object_vars($foo); echo gettype($foo).'<br/>'.get_class($foo).'<br/>'.var_export($cv_foo, true).'<br/>'.var_export($ov_foo, true).'<br/>'.isset($foo).'<br/>'.!empty($foo).'<br/>'.var_export($foo, true).'<br/><br/>'; $goo = null; settype($goo, 'array'); echo gettype($goo).'<br/>'.isset($goo).'<br/>'.!empty($goo).'<br/>'.var_export($goo, true).'<br/><br/>'; $hoo = false; settype($hoo, 'object'); $cv_hoo = get_class_vars(get_class($hoo)); $ov_hoo = get_object_vars($hoo); echo gettype($hoo).'<br/>'.get_class($hoo).'<br/>'.var_export($cv_hoo, true).'<br/>'.var_export($ov_hoo, true).'<br/>'.isset($hoo).'<br/>'.!empty($hoo).'<br/>'.var_export($hoo, true).'<br/><br/>'; $joo = false; settype($joo, 'array'); echo gettype($joo).'<br/>'.isset($joo).'<br/>'.!empty($joo).'<br/>'.var_export($joo, true).'<br/><br/>'; Expected result: ---------------- object stdClass array ( ) array ( ) 1 stdClass::__set_state(array( )) array 1 array ( ) object stdClass array ( ) array ( 'scalar' => false, ) 1 1 stdClass::__set_state(array( 'scalar' => false, )) array 1 1 array ( 0 => false, ) Actual result: -------------- object stdClass array ( ) array ( ) 1 1 stdClass::__set_state(array( )) array 1 array ( ) object stdClass array ( ) array ( 'scalar' => false, ) 1 1 stdClass::__set_state(array( 'scalar' => false, )) array 1 1 array ( 0 => false, ) -- Edit bug report at http://bugs.php.net/?id=43697&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=43697&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=43697&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=43697&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=43697&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=43697&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=43697&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=43697&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=43697&r=needscript Try newer version: http://bugs.php.net/fix.php?id=43697&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=43697&r=support Expected behavior: http://bugs.php.net/fix.php?id=43697&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=43697&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=43697&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=43697&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=43697&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=43697&r=dst IIS Stability: http://bugs.php.net/fix.php?id=43697&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=43697&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=43697&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=43697&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=43697&r=mysqlcfg
