#46246 [NEW]: difference between call_user_func(array($this, $method)) and $this->$method()

From: Date: Mon, 06 Oct 2008 21:51:30 +0000
Subject: #46246 [NEW]: difference between call_user_func(array($this, $method)) and $this->$method()
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-129521@lists.php.net to get a copy of this message
From: borysf at wp dot pl Operating system: Linux PHP version: 5.2.6 PHP Bug Type: Scripting Engine problem Bug description: difference between call_user_func(array($this, $method)) and $this->$method() Description: ------------ There is a difference in behavior of call_user_func(array($this, $method)) and $this->$method() while class B inherits from class A and both declares the same method. The call_user_func() function seems to work as expected, but using $this->$method() seems to invoke parent method implementation instead of the overridden one. Reproduce code: --------------- class A { protected function Test() { echo 'Hello from '.get_class($this); } public function call($method, $args = array()) { return $this->$method(); //return call_user_func(array($this, $method)); } } class B extends A { protected function Test() { echo 'Overridden hello from '.get_class($this); } } $a = new A; $b = new B; $a->call('Test'); $b->call('Test'); Expected result: ---------------- Hello from A Overridden hello from B Actual result: -------------- Hello from A Hello from B -- Edit bug report at http://bugs.php.net/?id=46246&edit=1 -- Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=46246&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=46246&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=46246&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=46246&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=46246&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=46246&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=46246&r=needscript Try newer version: http://bugs.php.net/fix.php?id=46246&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=46246&r=support Expected behavior: http://bugs.php.net/fix.php?id=46246&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=46246&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=46246&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=46246&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=46246&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=46246&r=dst IIS Stability: http://bugs.php.net/fix.php?id=46246&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=46246&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=46246&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=46246&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=46246&r=mysqlcfg

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