php读取txt文件并将数据插入到数据库

发布:smiling　来源: PHP粉丝网　添加日期：2019-12-04 10:31:01　浏览: 评论：0　

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(emptyempty($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! ';

}else {

 echo 'Failed!--Error:'.array_shift($result).' ';

}

/*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! ';

}else {

 echo 'Failed!--Error:'.array_shift($result).' ';

}

/* 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! ';

}else {

 echo 'Failed!--Error:'.array_shift($result).' ';

}

/* 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! ';

}else {

 echo 'Failed!--Error:'.array_shift($result).' ';

}

//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