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Bug #9137 eval adds function to global space rather than class method
Submitted: 2001-02-06 17:32 UTC Modified: 2001-02-06 17:38 UTC
From: aj at homeboyz dot com Assigned: waldschrott (profile)
Status: Closed Package: Class/Object related
PHP Version: 4.0.4pl1 OS: Linux
Private report: No CVE-ID: None
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From: aj at homeboyz dot com
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 [2001-02-06 17:32 UTC] aj at homeboyz dot com
I am trying to generate class methods on the fly.

I created a string which was php code for a function. I wished this funciton to be a class method. I call eval on the string, and it produces no errors. When I wish to call that method of the object, the script fails indicating a call to an undefined funciton. However, I can call that function in the page space, rather than as a class method. But, the function is useless unless it is a method.

The following is part of the code that is executed in the constructor:

$str = "";
foreach($this->getMappedAttributes() as $attribute)
  $str .= "$"."this->_".$attribute['attribute']." = \"\";";
  $str .= "function get".$attribute['attribute']."() {";
  $str .= "return $"."this->_".$attribute['attribute'].";}";


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 [2001-02-06 17:38 UTC]
and this is correct, eval uses its own scope, the only
possibilty I see at the moment to solve your specific
problem is to eval() the entire class maybe in combination
with inheritance
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