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Bug #14152 foreach() can create objects with blank property names
Submitted: 2001-11-20 13:22 UTC Modified: 2002-01-15 07:19 UTC
From: basil dot hussain at kodakweddings dot com Assigned:
Status: Not a bug Package: Class/Object related
PHP Version: 4.0.5 OS: Linux 2.2.16-enterprise
Private report: No CVE-ID: None
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From: basil dot hussain at kodakweddings dot com
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 [2001-11-20 13:22 UTC] basil dot hussain at kodakweddings dot com 
Using the following code (which someone may do accidentally):

$myarray = array("X" => "A", "Y" => "B", "Z" => "C");
foreach($myarray as $key->$value) {
  ...
}

causes PHP (on each iteration) to create an object $key with the value of the current array element in a property with a blank name (because $value has just been created, and is therefore empty).

The following var_dump() output illustrates:

object(stdClass)(1) {
  [""]=>
  string(1) "A"
}

The creation of objects with blank property names seems like it shouldn't be possible (even unintentionally)!

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 [2001-11-22 18:45 UTC] edink@php.net 
Much easier to reproduce by:

$a->$b="c";

Foreach loop should of course read

foreach($myarray as $key=>$value)
 [2002-01-15 07:19 UTC] lobbin@php.net 
Bogus, user error.
 
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