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我正在尝试上传包含超过 100k 行的 CSV 文件。下面的代码工作正常，但是，它太慢了，我不得不修改 php.ini 的原因。我正在寻找一种让它更快的方法。

    mysqli_query($db, "SET AUTOCOMMIT=0");
    mysqli_query($db, "开始");
    mysqli_query($db, "SET FOREIGN_KEY_CHECKS = 0");
    fgets($句柄);
    $数据 = '';


 while (($data = fgetcsv($handle, 100000, ';')) !== FALSE):
  $nf = trim($data[0]);
  //ignore values lower than 1
  if ($nf &lt 1):
   continue;
  else:
   $v1 = trim($data[1]);
   $v2 = trim($data[2]);

   $query = "SELECT * FROM tbl_venda WHERE nota = ". $nf ;
   $rs = mysqli_query($db, $query);
   validaQuery($db, $rs);

   //if $nf alrealdy exists, update, else, insert a new row
   if (mysqli_num_rows($rs) > 0):
    //UPDATE
   else:
    //INSERT
   endif; 

  endif;
 endwhile;

 mysqli_query($db, "COMMIT");
 mysqli_query($db, "SET AUTOCOMMIT=1");
 mysqli_query($db, "SET FOREIGN_KEY_CHECKS = 1");
 mysqli_close($db);
</pre>
<p>Does anyone know how can i make it faster?</p>
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