Detailed explanation of how to import csv files into the database in PHP

How does PHP import csv files into the database? This article mainly introduces the method of importing csv files into mysql database through PHP programming, involving PHP file reading, conversion, database connection, insertion and other related operation skills. Friends in need can refer to it. I hope to be helpful.

The details are as follows:

config.db.php content is as follows;

<?php
$username="root";
$userpass="123";
$dbhost="localhost";
$dbdatabase="credits2stakes";
//生成一个连接
$db_connect=mysql_connect($dbhost,$username,$userpass) or die("Unable to connect to the MySQL!");
//选择一个需要操作的数据库
mysql_select_db($dbdatabase,$db_connect);

index.php content is as follows:

<meta http-equiv="Content-Type"content="text/html; charset=utf-8" />
<form name="frm1" enctype="multipart/form-data" action="insertdb.php" method="post">
  <input name="filename" type="file" /><input name="submit" type="submit" value="import" />
</form>

insertdb.php content As follows:

<?php
session_start();
header("Content-type:text/html;charset:utf-8");
//全局变量
$file=$_FILES[&#39;filename&#39;];
$max_size="2000000"; //最大文件限制（单位：byte）
$fname=$file[&#39;name&#39;];
$ftype=strtolower(substr(strrchr($fname,&#39;.&#39;),1));
//文件格式
$uploadfile=$file[&#39;tmp_name&#39;];
if($_SERVER[&#39;REQUEST_METHOD&#39;]==&#39;POST&#39;){
   if(is_uploaded_file($uploadfile)){
     if($file[&#39;size&#39;]>$max_size){
     echo "Import file is too large";
     exit;
     }
     if($ftype!=&#39;csv&#39;){
     echo "Import file type is error";
     exit;
     }
   }else{
   echo "The file is not empty!";
   exit;
   }
}
require("./config.db.php");  //连接mysql数据库
$row=0;
$filename=$file[&#39;tmp_name&#39;];
$handle=fopen($filename,&#39;r&#39;);
while(!feof($handle) && $data=fgetcsv($handle,1000,&#39;,&#39;)){
  $arr_result=array();
  if($row==0){
   $row++;
   continue;
  }
  if($row>0 && !empty($data)){
    $num=count($data);
    for($i=0;$i<$num;$i++){
    array_push($arr_result,$data[$i]);
   }
  //$name = iconv(&#39;gb2312&#39;,&#39;utf-8&#39;,$arr_result[1]);
  //$sex = iconv(&#39;gb2312&#39;,&#39;utf-8&#39;,$arr_result[2]);
  $sql="insert into inviter(inviter,invitees,time) value($arr_result[1],$arr_result[2],$arr_result[3])";
  //echo $sql;
  mysql_query("set names utf8");
  $result=mysql_query($sql);
  if($result){
    echo "插入成功！！！";
   }else{
    echo "插入失败！！！";
      }
   }
   $row++;
}
fclose($handle);
?>

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