Description:
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There is a BC break in the @ operator from PHP 4 to 5.

While PHP 4 doesn't output anything with supplied script (the correct thing), PHP 5 echoes a notice.

Reproduce code:
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<?

error_reporting(E_ALL);

function a ($var){}

a(@$abc);

?>

Expected result:
----------------
nothing

Actual result:
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Notice: Undefined variable: abc