How to read a txt file in php to form SQL and insert it into the database-PHP Tutorial-php.cn

How to read a txt file in php to form SQL and insert it into the database

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Release： 2016-07-25 09:04:33

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/**
* $splitChar field separator
* $file data file file name
* $table database table name
* $conn database connection
* $fields column name corresponding to the data
* $insertType insert operation type, including INSERT, REPLACE
* Collection and organization: bbs.it-home.org
*/
function loadTxtDataIntoDatabase($splitChar,$file,$table,$conn,$fields=array(),$insertType=' INSERT'){
if(empty($fields)) $head = "{$insertType} INTO `{$table}` VALUES('";
else $head = "{$insertType} INTO `{$table}` (`".implode('`,`',$fields)."`) VALUES('"; //Data header
$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';
}
//Processing data body, both The order cannot be changed, otherwise there will be an error when using spaces or tab separators
$sqldata = preg_replace('/(s*)(n+)(s*)/i',''),('',$sqldata); //Replace Line break
$sqldata = $specialFunc($splitChar,$replace,$sqldata); //Replace the delimiter
$query = $head.$sqldata.$end; //Data splicing
if(mysql_query($query,$conn )) return array(true);
else {
return array(false,mysql_error($conn),mysql_errno($conn));
}
}
//Call example 1
require 'db.php';
$ splitChar = '|'; //Vertical bar
$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
*/
//Call example 2
require 'db.php' ;
$splitChar = ' '; //space
$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
*/
//Call Example 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
*/
//Call Example 3
require 'db.php';
$splitChar = ' '; //Tab
$file = 'sqldata3.txt';
$fields = array('id','value');
$table = 'notExist'; //Table does not exist
$result = loadTxtDataIntoDatabase($splitChar,$file,$table,$conn,$fields);
if (array_shift($result)){
echo 'Success!< ;br/>';
}else {
echo 'Failed!--Error:'.array_shift($result).'
';
}
/ /Attachment: db.php
/* //Comment this line to release all
?>
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;
}
?>

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Copy code The code is as follows:

//*/
Data table structure
-- Data table structure:
-- 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 (100,000) row insertion: Insert 100000_line_data use 2.5534288883209 seconds 1000000 (1 million) row insertion: Insert 1000000_line_data use 19.67731 8811417 seconds
//Possible error: MySQL server has gone away
//Solution: Modify my.ini/my.cnf max_allowed_packet=20M