It's not that simple ... you need to change the URL
possibly from
PHP Code:
$ch = curl_init($sc_host . '/admin.cgi?mode=viewxml&sid=$sc_sid');
to
PHP Code:
$ch = curl_init($sc_host . '/admin.cgi?mode=viewxml');
and remove
PHP Code:
'NEXTTITLE' => (string)$xml->NEXTTITLE,
NOTE: I have not checked the above, but I'm confident