写日志

if($res){
     $file = '../ds/logs/'.date('Ym', $time).'/'.date('Y-m-d', $time).'_first_or_last.txt';
     $content = "场次".$value1['seq_no']."被设为首末场\n";
     if($f = file_put_contents($file, $content,FILE_APPEND)){
          echo "写入成功。<br />";
       }
  }

得到