PHP Error: Base class function calls derived class -

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i writing api in php. have got base class implemets magic function __call:

class controller {     public function __call($name, $arguments)     {         if(!method_exists($this,$name))             return false;         else if(!$arguments)             return call_user_func(array($this,$name));         else             return call_user_func_array(array($this,$name),$array);     } }

and child class this:

class child extends controller {     private function test()     {         echo 'test called';     } }

so when this:

$child = new child(); $child->test();

and load page takes lot of time , after while web browser prints page can't requested. no output given php, web browser error.

apache error log (last part only):

... [tue sep 24 12:33:14.276867 2013] [mpm_winnt:notice] [pid 1600:tid 452] ah00418: parent: created child process 3928 [tue sep 24 12:33:15.198920 2013] [ssl:warn] [pid 3928:tid 464] ah01873: init: session cache not configured [hint: sslsessioncache] [tue sep 24 12:33:15.287925 2013] [mpm_winnt:notice] [pid 3928:tid 464] ah00354: child: starting 150 worker threads. [tue sep 24 12:38:43.366426 2013] [mpm_winnt:notice] [pid 1600:tid 452] ah00428: parent: child process exited status 3221225725 -- restarting. [tue sep 24 12:38:43.522426 2013] [ssl:warn] [pid 1600:tid 452] ah01873: init: session cache not configured [hint: sslsessioncache]

i can't find mistake, if function test protected works fine.

solution found:

public function __call($name, $arguments) {     if(!method_exists($this,$name))         return false;     $meth = new reflectionmethod($this,$name);     $meth->setaccessible(true);     if(!$arguments)         return $meth->invoke($this);     else         return $meth->invokeargs($this,$arguments); }

this behavior issue (bug?) documented in documentation of method_exists(): method_exists() returns true if method private/protected , thus, not accessible outside class. leads infinite recursion in case, child->test() call invokes child::__call(), checks whether test() exists (it does, can't called), tries call it, again leeds __call() being invoked. comments suggest using get_class_methods() might resolve issue. i'm not sure why changing visibility of test() private changes behavior stated.


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