Description:
------------
Setting a level of error reporting by a call to error_reporting(value) function interferes with @ operator, ie. if the value is >0 error messages are generated even within the scope of @ operator. This behavior contradicts a statement made by manual about @ operator:

"When prepended to an expression in PHP, any error messages that might be generated 
by that expression will be ignored." 

I would expect error messages to be ignored throughout an entire scope of the @ operator regardless of operations performed there.

The following example is quite artificial, however there may be situations one would like to have a function changing various configuration options including error reporting level. When he or she also wants to disable all warnings made by this function (or some of its caller) a problem arises.


Reproduce code:
---------------
<?
function f()
{
  var_dump(error_reporting(E_ALL));
  var_dump(error_reporting());
  array_fill(-1,-1,-1); // deliberately invalid arguments

@f();
var_dump(error_reporting());
?>

Expected result:
----------------
int(0)
int(0)
int(2047)

Actual result:
--------------
int(0)
int(2047)
Warning: array_fill(): Number of elements must be positive in ...
int(2047)