function RegiNum2($reginum) {
$weight = '137137135'; // 자리수 weight 지정
$len = strlen($reginum);
$sum = 0;

if ($len <> 10) { return false; }

for ($i = 0; $i < 9; $i++) {
$sum = $sum + (substr($reginum,$i,1)*substr($weight,$i,1));
}
$sum = $sum + ((substr($reginum,8,1)*5)/10);
$rst = $sum%10;

if ($rst == 0) {$result = 0;}
else {$result = 10 - $rst;}

$saub = substr($reginum,9,1);

if ($result <> $saub) {return false;}
return true;
}  

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