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function isValidSmsCode($usluga, $kod){
$content = file('http://dotpay.pl/check_code.php?id=_dotpay_id_&code='.substr($usluga,3).'&check='.$kod.'&del=1&type=sms');
return isset($content[0]) && (int
)$content[0] == 1 ?
true : false;
}