fputcsv 和 fgetcsv

 public function putcsv(){
     $list = M("ad")->limit(0,10)->select();
     $fp = fopen('./file.csv','w');
     foreach($list as $val){
         fputcsv($fp,$val);
     }
     fclose($fp);

 }

public function getcsv(){
    $file = "./file.csv";
    $fp = fopen($file,'r');
    while(($data = fgetcsv($fp)) !== false){
            $arr[]=$data;
    }
    fclose($fp);
}