PHP imports csv to sql file and automatically inserts it into the database (example)

/**
* php header import csv file
* Editor: bbs.it-home.org
*/
header('Content-type:text/html;charset=utf-8;');
@date_default_timezone_set('Asia /Shanghai');
@error_reporting(E_ALL);
@ini_set('display_errors', 'On');
@ini_set('memory_limit', '512M');
define('DB_HOST', 'localhost');
define('DB_USER', 'root');
define('DB_PASS', '');
define('DB_NAME', 'DB_XXX');
//Batch import csv Format data and generate imported sql files
//The csv file is listed as province (province, city, area, position, address), pay attention to correspond to the database fields
$sql_list = array();
foreach(array(
 'chongqing. csv' => array('name' => 'Chongqing City','sort' => 4),
 'guizhou.csv' => array('name' => 'Guizhou Province',' sort' => 24),
 'shanghai.csv' => array('name' => 'Shanghai','sort' => 2),
 'sichuan.csv' => array(' name' => 'Sichuan Province','sort' => 23),
 'yunnan.csv' => array('name' => 'Yunnan Province','sort' => 25)
 ) as $filename => $_data) {
 $sql = $sql_start = "INSERT INTO `Tbl_Data` (`province`,`city`,`area`,`position`,`address`,`sort`) VALUES ";
 $handle = fopen($filename,'r');
 $i=0;
 echo '';
 while( $row = fgetcsv($handle,1000,',') ){
 if(!$row) continue;
 if($i<1000000){
 $sql .= "('".iconv('gbk','utf-8',trim($row[0])). "','".iconv('gbk','utf-8',trim($row[1]))."','".iconv('gbk','utf-8',trim($row [2]))."','".iconv('gbk','utf-8',trim($row[3]))."','".iconv('gbk','utf-8 ',trim($row[4]))."','".$_data['sort']."'),";
 }else{
 break;
 }
 $i++;
 }
 $sql = rtrim($sql,',');
 $sql_list[] = $sql;
 $csv = 'csv_import_'.$filename.'_'.date('Y-m-d').'.sql';
 $csv_arr[] = $csv;
 $write_result = file_put_contents($csv,implode("nn",$sql_list));
 if($write_result){
 echo $csv."File generation successful. n";
}else{
 echo $csv."File writing failed! ! ! n";
 }
}
//Write to database (sql file generated by importing csv file by php)
$lnk = mysql_connect(DB_HOST, DB_USER , DB_PASS);
mysql_select_db(DB_NAME, $lnk);
mysql_query('SET SQL_MODE=""', $lnk);
mysql_query('SET NAMES utf8', $lnk);
$i = 0;
foreach( $sql_list as $sql) {
 $query_result = mysql_query($sql,$lnk);
 if($query_result){
 echo 'Write data:';
 echo $csv_arr[$i]."Data written successfully . nr";
 }else{
 echo 'Failed to write data';
 echo $csv_arr[$i]."Failed to write data! ! ! nr";
 }
 $i++;
}
mysql_close($lnk);
unset($sql,$sql_list,$write_result,$csv_arr,$query_result,$lnk);
?>