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DB::beginTransaction();
foreach($checkArr[0] as $v){
$id = explode('-',$v)[0];
$rank = explode('-',$v)[1] != '' ? explode('-',$v)[1] : 5;
if(index_friendlink::where('id','=',$id)->pluck('online') == 1){
$updrank = index_friendlink::find($id);
$updrank -> rank = $rank;
$updrank -> save();
}
}
$ret = index_friendlink::where('online','=','1')->get();
foreach($ret as $v) {
$retRank[] = $v->rank;
}
if (count($retRank) != count(array_unique($retRank))) {
DB::rollback();
echo '2';
exit;
}
DB::commit(); 
