Description:
------------
The scope of $php_errormsg has changed in 5.3.  It is no longer available inside functions.

Perhaps this is intentional, perhaps not.  If it is intentional, I encourage the decision be changed to improve compatibility between versions.

If it won't be changed, we need to update the 5.3 upgrade guide at
http://wiki.php.net/doc/scratchpad/upgrade/53.

Reproduce code:
---------------
if (!@substr('no 2nd parameter')) {
    echo '$php_errormsg in global: ' . $php_errormsg . "\n";
}

function foo() {
    if (!@substr('no 2nd parameter')) {
        echo '$php_errormsg in function: ' . $php_errormsg . "\n";

        echo '$GLOBALS[php_errormsg] in function: ' .
                $GLOBALS['php_errormsg'] . "\n";
    }
}

foo();


Expected result:
----------------
$php_errormsg in global: substr() expects at least 2 parameters, 1 given
$php_errormsg in function: substr() expects at least 2 parameters, 1 given
$GLOBALS[php_errormsg] in function: substr() expects at least 2 parameters, 1 given


Actual result:
--------------
$php_errormsg in global: substr() expects at least 2 parameters, 1 given


Notice:  Undefined variable: php_errormsg in D:\webroot\ideasphp\Atest.html on line 10

$php_errormsg in function: 
$GLOBALS[php_errormsg] in function: substr() expects at least 2 parameters, 1 given