Curl restarts itself, what's the problem?

Question

PHP

$page =mysql_query("SELECT * FROM `link` WHERE `onoff` > '2' AND `status` = '0'");
$check = mysql_num_rows($page);
$res = mysql_query("SELECT *  FROM `groups` WHERE `idgroup`  IN ( 'me','820886501366475') ");
$res1 =mysql_query("SELECT * FROM (SELECT * FROM `link` WHERE `onoff` > '2' AND `status` = '0' ORDER BY `share` LIMIT 1) a ORDER BY `id`");
$row1 = mysql_fetch_array($res1);
$today = date("F j, Y, g:i a");



if($check < 1)
{
    echo "Записей нет";
}
else
{

while($row = mysql_fetch_array($res))
{


$attachment =  array(
'id' => $id,
'access_token' => $token,
'link' => $row[link]
);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,'https://graph.facebook.com/v2.4/feed');
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_TIMEOUT, 15);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 15);
curl_setopt($ch, CURLOPT_POSTFIELDS, $attachment);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);  //to suppress the curl output 
$result = curl_exec($ch);
curl_close ($ch);


mysql_query("INSERT INTO `status` (`id`, `idurl`, `idgroup`, `name`, `stat`, `status`, `user`) VALUES (NULL, '$as', '$row[idgroup]', '$row[name]', '$result[3]', '$result', '$row[user]');");

echo $result[3];
echo "<br />";
echo $da;
mysql_query("UPDATE `link` SET `status` = `status` + 1 WHERE `id` = ".$row1['id'].";");



}
}

    





mysql_close();

The script is executed correctly, the Facebook post is published, but exactly 10 minutes later the script starts again, and publishes again, but the next entry in the cron is
like this
php -q /home/web/domen/public_html/cron/2.php like this I run it I run
the script through the browser there are no problems
if I remove

if($check < 1)
{
    echo "Записей нет";
}
else
{

then everything works fine,
tell me please where is my cant?