From: [EMAIL PROTECTED] Operating system: Linux PHP version: 5.3CVS-2008-01-24 (CVS) PHP Bug Type: Unknown/Other Function Bug description: isInstance() isn't equivalent to instanceof operator
Description: ------------ Says the documentation: "Note: $class = new ReflectionClass('Foo'); $class->isInstance($arg) is equivalent to $arg instanceof Foo or is_a($arg, 'Foo')." However, this isn't true because not is checked the parent class. Reproduce code: --------------- <?php class E { } class D extends E { } class A extends D { } class C extends A { } $ra = new ReflectionClass('A'); $rc = new ReflectionClass('C'); $rd = new ReflectionClass('D'); $re = new ReflectionClass('E'); $ca = $ra->newInstance(); $cc = $rc->newInstance(); $cd = $rd->newInstance(); $ce = $re->newInstance(); print("Is? A ". ($ra->isInstance($ca) ? 'true' : 'false') .", instanceof: ". (($ca instanceof A) ? 'true' : 'false') ."\n"); print("Is? C ". ($ra->isInstance($cc) ? 'true' : 'false') .", instanceof: ". (($ca instanceof C) ? 'true' : 'false') ."\n"); print("Is? D ". ($ra->isInstance($cd) ? 'true' : 'false') .", instanceof: ". (($ca instanceof D) ? 'true' : 'false') ."\n"); print("Is? E ". ($ra->isInstance($ce) ? 'true' : 'false') .", instanceof: ". (($ca instanceof E) ? 'true' : 'false') ."\n"); ?> Expected result: ---------------- Is? A true, instanceof: true Is? C false, instanceof: false Is? D true, instanceof: true Is? E true, instanceof: true Actual result: -------------- Is? A true, instanceof: true Is? C false, instanceof: false Is? D false, instanceof: true Is? E false, instanceof: true -- Edit bug report at http://bugs.php.net/?id=43926&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=43926&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=43926&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=43926&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=43926&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=43926&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=43926&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=43926&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=43926&r=needscript Try newer version: http://bugs.php.net/fix.php?id=43926&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=43926&r=support Expected behavior: http://bugs.php.net/fix.php?id=43926&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=43926&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=43926&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=43926&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=43926&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=43926&r=dst IIS Stability: http://bugs.php.net/fix.php?id=43926&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=43926&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=43926&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=43926&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=43926&r=mysqlcfg