php读取txt文件组成SQL并插入数据库的方法

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发布： 2016-07-25 09:04:33

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/**
* $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
* $inserttype 插入操作类型，包括insert,replace
* 搜集整理：bbs.it-home.org
*/
function loadtxtdataintodatabase($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($result)){
echo 'success!
';
}else {
echo 'failed!--error:'.array_shift($result).'
';
}
/*sqlda ta1.txt
|0|a
|1|b
|1|c
|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
aston db19 2009
aston db29 2009
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
aston db19 2009
aston db29 2009
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
?>
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;
}
?>