php读取txt文件并将数据插入到数据库

今天测试一个功能，需要往数据库中插入一些原始数据，pm给了一个txt文件，如何快速的将这个txt文件的内容拆分为所要的数组，然后再插入到数据库中？

serial_number.txt的示例内容：

serial_number.txt：

dm00001a11 0116,
sn00002a11 0116,
ab00003a11 0116,
pv00004a11 0116,
oc00005a11 0116,
ix00006a11 0116,

创建数据表：

create table serial_number(
id int primary key auto_increment not null,
serial_number varchar(50) not null
)engine=innodb default charset=utf8;

php代码如下：

$conn = mysql_connect('127.0.0.1','root','') or die("invalid query: " . mysql_error());
mysql_select_db('test', $conn) or die("invalid query: " . mysql_error());

$content = file_get_contents("serial_number.txt");
$contents= explode(",",$content);//explode()函数以","为标识符进行拆分

foreach ($contents as $k => $v)//遍历循环
{
  $id = $k;
  $serial_number = $v;
  mysql_query("insert into serial_number (`id`,`serial_number`)
      values('$id','$serial_number')");
}

备注：方法有很多种，我这里是在拆分txt文件为数组后，然后遍历循环得到的数组，每循环一次，往数据库中插入一次。

再给大家分享一个支持大文件导入的

<?php
/**
 * $splitchar 字段分隔符
 * $file 数据文件文件名
 * $table 数据库表名
 * $conn 数据库连接
 * $fields 数据对应的列名
 * $inserttype 插入操作类型，包括insert,replace
 */
function loadtxtdataintodatabase($splitchar,$file,$table,$conn,$fields=array(),$inserttype='insert'){
  if(empty($fields)) $head = "{$inserttype} into `{$table}` values('";
  else $head = "{$inserttype} into `{$table}`(`".implode('`,`',$fields)."`) values('";  //数据头
  $end = "')";
  $sqldata = trim(file_get_contents($file));
  if(preg_replace('/\s*/i','',$splitchar) == '') {
    $splitchar = '/(\w+)(\s+)/i';
    $replace = "$1','";
    $specialfunc = 'preg_replace';
  }else {
    $splitchar = $splitchar;
    $replace = "','";
    $specialfunc = 'str_replace';
  }
  //处理数据体，二者顺序不可换，否则空格或tab分隔符时出错
  $sqldata = preg_replace('/(\s*)(\n+)(\s*)/i','\'),(\'',$sqldata);  //替换换行
  $sqldata = $specialfunc($splitchar,$replace,$sqldata);        //替换分隔符
  $query = $head.$sqldata.$end;  //数据拼接
  if(mysql_query($query,$conn)) return array(true);
  else {
    return array(false,mysql_error($conn),mysql_errno($conn));
  }
}

//调用示例1
require 'db.php';
$splitchar = '|';  //竖线
$file = 'sqldata1.txt';
$fields = array('id','parentid','name');
$table = 'cengji';
$result = loadtxtdataintodatabase($splitchar,$file,$table,$conn,$fields);
if (array_shift($result)){
  echo 'success!<br/>';
}else {
  echo 'failed!--error:'.array_shift($result).'<br/>';
}
/*sqlda ta1.txt
1|0|a
2|1|b
3|1|c
4|2|d

-- cengji
create table `cengji` (
 `id` int(11) not null auto_increment,
 `parentid` int(11) not null,
 `name` varchar(255) default null,
 primary key (`id`),
 unique key `parentid_name_unique` (`parentid`,`name`) using btree
) engine=innodb auto_increment=1602 default charset=utf8
*/

//调用示例2
require 'db.php';
$splitchar = ' ';  //空格
$file = 'sqldata2.txt';
$fields = array('id','make','model','year');
$table = 'cars';
$result = loadtxtdataintodatabase($splitchar,$file,$table,$conn,$fields);
if (array_shift($result)){
  echo 'success!<br/>';
}else {
  echo 'failed!--error:'.array_shift($result).'<br/>';
}
/* sqldata2.txt
11 aston db19 2009
12 aston db29 2009
13 aston db39 2009

-- cars
create table `cars` (
 `id` int(11) not null auto_increment,
 `make` varchar(16) not null,
 `model` varchar(16) default null,
 `year` varchar(16) default null,
 primary key (`id`)
) engine=innodb auto_increment=14 default charset=utf8
*/

//调用示例3
require 'db.php';
$splitchar = '  ';  //tab
$file = 'sqldata3.txt';
$fields = array('id','make','model','year');
$table = 'cars';
$inserttype = 'replace';
$result = loadtxtdataintodatabase($splitchar,$file,$table,$conn,$fields,$inserttype);
if (array_shift($result)){
  echo 'success!<br/>';
}else {
  echo 'failed!--error:'.array_shift($result).'<br/>';
}
/* sqldata3.txt
11  aston  db19  2009
12  aston  db29  2009
13  aston  db39  2009 
*/

//调用示例3
require 'db.php';
$splitchar = '  ';  //tab
$file = 'sqldata3.txt';
$fields = array('id','value');
$table = 'notexist';  //不存在表
$result = loadtxtdataintodatabase($splitchar,$file,$table,$conn,$fields);
if (array_shift($result)){
  echo 'success!<br/>';
}else {
  echo 'failed!--error:'.array_shift($result).'<br/>';
}

//附：db.php
/*  //注释这一行可全部释放
?>
<?php
static $connect = null;
static $table = 'jilian';
if(!isset($connect)) {
  $connect = mysql_connect("localhost","root","");
  if(!$connect) {
    $connect = mysql_connect("localhost","zjmainstay","");
  }
  if(!$connect) {
    die('can not connect to database.fatal error handle by /test/db.php');
  }
  mysql_select_db("test",$connect);
  mysql_query("set names utf8",$connect);
  $conn = &$connect;
  $db = &$connect;
}
?>

//*/
复制代码
-- 数据表结构：

-- 100000_insert,1000000_insert

create table `100000_insert` (
 `id` int(11) not null auto_increment,
 `parentid` int(11) not null,
 `name` varchar(255) default null,
 primary key (`id`)
) engine=innodb auto_increment=1 default charset=utf8

 100000 （10万）行插入：insert 100000_line_data use 2.5534288883209 seconds

 1000000（100万）行插入：insert 1000000_line_data use 19.677318811417 seconds

//可能报错：mysql server has gone away

//解决：修改my.ini/my.cnf   max_allowed_packet=20m