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Bug #35548 $class->${'varname'} does not work
Submitted: 2005-12-04 21:58 UTC Modified: 2005-12-05 01:43 UTC
From: capiCrimm at gmail dot com Assigned:
Status: Not a bug Package: Class/Object related
PHP Version: 5.1.1 OS: GNU Debian Sarge
Private report: No CVE-ID: None
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From: capiCrimm at gmail dot com
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 [2005-12-04 21:58 UTC] capiCrimm at gmail dot com
Description:
------------
Where you can do ${'var'} with a normal variable trying to 
do the same thing with a class prop. results in a fatal 
error. It happens inside{$this} and outside the class. 
With public, private, and protected. It does work 
correctly with static variables. 

Reproduce code:
---------------
<?php

class Test
{
  protected $variable = 'one';

  public function test(){
    print $this->variable;
    print $this->${'variable'};
  }

}
$t = new Test;

?>

Expected result:
----------------
oneone 

Actual result:
--------------
one 
 Fatal error: Cannot access empty property 
in /www/unstable/apache2/php5/admin/mRio/mRioDUM/bella1/test.php 
on line 9 

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 [2005-12-04 22:06 UTC] tony2001@php.net
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php

>Where you can do ${'var'} with a normal variable 
That doesn't work either.
 [2005-12-04 23:35 UTC] capiCrimm at gmail dot com
I'll agree that this may not be a bug, rather how you  
choose to develop the engine. However ${} does work with  
normal variables and class static variables. The following 
prints ``five'' as  
expected.  
<?php  
  
$one = 'five';  
print ${'one'};  
  
?>
 [2005-12-05 01:43 UTC] capiCrimm at gmail dot com
eh. I figured it out, instead of $this->${'var'} you use 
$this->{'var'}
 
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