Bug #51479 [Com]: property_exists now wrong

Edit report at http://bugs.php.net/bug.php?id=51479&edit=1

 ID:               51479
 Comment by:       abca_b_cabcom at hotmail dot com
 Reported by:      ian at ianhobson dot co dot uk
 Summary:          property_exists now wrong
 Status:           Open
 Type:             Bug
 Package:          Class/Object related
 Operating System: Windows
 PHP Version:      5.3.2

 New Comment:

Hi ivan, i think you could use the reflection api to handle it
http://www.php.net/manual/en/reflectionproperty.isprivate.php


Previous Comments:
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[2010-04-05 15:26:42] ian at ianhobson dot co dot uk

Description:
------------
Now that property_exists returns true for all private properties, there
is no way (I know) to test that a property is private before writing to
it and causing a fatal error. 

The previous behaviour was wrong - private properties that are in scope
should return true - but the new code is worse. 
See Bug #50810: property_exists does not work for private 

I think property_exists should return true for writable properties...
  which implies a scope... 
    if the user coded $this then the scope is the current scope. 

If the use gives a class name, then the scope is that class. 

I have not managed to re-code the routine below to work in 5.3.0 (let
alone both 5.3.? and 5.2.?). 



Test script:
---------------
public function setField($fld, $value) {
      // set the fld to the value
      if (property_exists($this,$fld)) {
         $this->$fld = $value;  // handles public and protected fields 
         return;
      }
      $this->setMapped($fld,$value); // for private vars.
   }

Create a class with the above function. Create a sub-class with a
private variable. Call it on the sub-class with fldname and value. 
In 5.3.0 this crashes with a fatal error. 
In 5.2.9 it calls setMapped. 





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Edit this bug report at http://bugs.php.net/bug.php?id=51479&edit=1