Drupal unpublish node programmatically

<?

$nids = explode(',','62013,61859,61863,61865,61867,61871,61886,63158,62026,62030,186894,62065,62066,62075,62077,147834,62944,62107,62109,62110,62113,62114,62117,62593,62595,147333,62625,62725,62730,62731,62737,62738,147694,62744,62746,62747,62749,62752,62882,62931,62936,62939,63142,63329,63330,179870,147716,63537,63545,63990,63779,63778,64096,64097,64098,147160,64105,147159,138323,142181,146031,210600,235951,141272,142298,186895,146032,146997,147529,145236,145813,274097,281698,296945,299231');

foreach ($nids as $nid)
{
$node = node_load($nid);

if (isset($node->status))
{
$node->status = 0;
node_save($node);
}

}

?>