Bravo List - Memcache problem... or php code?

Hello!

I attached a picture. My ID is the number 5. Why does memcache delete data from memory?

http://prntscr.com/14ebbq7

PHP Code:


		
			
if (($user = $mc1->get_value('user' . $id)) === false) 

{

  $user_fields_ar_float = array('u.time_offset','u.total_donated');



  $user_fields_ar_int = array('u.id','u.class','u.torrentsperpage','u.invites','u.invited_by','u.topicsperpage','u.postsperpage','u.last_browse','u.advent','u.login','u.added','u.last_login',

                              'u.last_access','u.warneduntil','u.leechwarnuntil','u.vip_until','u.free_until','u.dst_in_use','u.auto_correct_dst','u.donoruntil','u.donated','u.faq_readed',



                              'count(DISTINCT comm.id) AS comments',

                              'count(DISTINCT posts.id) AS forumpost',                        

                                  

                              'u.uploaded','u.downloaded','u.seedbonus');



  $user_fields_ar_str = array('u.username','u.passhash','u.secret','u.editsecret','u.email','u.status','u.privacy','u.theme','u.acceptpms','u.ip','u.avatar','u.notifs','u.enabled','u.avatars','u.donor',

                              'u.warned','u.deletepms','u.savepms','u.passkey','u.uploadpos','u.downloadpos','u.leechwarn','u.chatpost','u.pincode','u.forumpost','u.vip_added','u.cpanel','u.invisible',

                              'u.highspeed','u.adult','u.observed','u.observed_reason','u.checked_user','u.free','u.disabled_reason',

                                  

                              'u.modcomment','u.bonuscomment');

    

  $user_fields = implode(', ', array_merge($user_fields_ar_int, $user_fields_ar_float, $user_fields_ar_str));  

  

  $r = sql_query("SELECT $user_fields FROM users u 

                  LEFT JOIN comments comm ON (u.id = comm.user) 

                  LEFT JOIN posts ON (u.id = posts.userid) 

                  LEFT JOIN peers p ON (u.id = p.userid) 

                  WHERE u.id = ".sqlesc($id)) OR sqlerr(__FILE__, __LINE__);

                  

  $user = mysqli_fetch_assoc($r) OR stderr("Hiba", "Nincs felhasználó a megadott ID-vel.", "danger");



  foreach ($user_fields_ar_int as $i) $user[$i] = (int)$user[$i];

  foreach ($user_fields_ar_float as $i) $user[$i] = (float)$user[$i];

  foreach ($user_fields_ar_str as $i) $user[$i] = $user[$i];

  $mc1->cache_value('user' . $id, $user, $INSTALLER09['expires']['user_cache']);

}

A $INSTALLER09['expires']['user_cache'] is set in the config file.

When it expires in 30 days ... It's in it first. No more for next search.

Thank You!