Question

我尝试了以下代码，但遇到了一些错误。在这里我可以读取输入文件，但是我收到以下错误：不推荐使用：在第63行的C：\ wamp \ www \ aaj2 \ index.php中不推荐使用函数split（）。 O / P：在此csv文件中共找到5124条记录。

<?php
$databasehost = "localhost"; 
$databasename = "test"; 
$databasetable = "sample"; 
$databaseusername="test"; 
$databasepassword = ""; 
$fieldseparator = ","; 
$lineseparator = "\n";
$csvfile = "filename.csv";
$addauto = 0;
$save = 1; 
$outputfile = "output.sql";        

        if(!file_exists($csvfile)) {    echo "File not found. Make sure you specified the correct path.\n";     exit; }

        $file = fopen($csvfile,"r");

        if(!$file) {    echo "Error opening data file.\n";  exit; }

        $size = filesize($csvfile);

        if(!$size) {    echo "File is empty.\n";    exit; }

        $csvcontent = fread($file,$size);

        fclose($file);

        $con = @mysql_connect($databasehost,$databaseusername,$databasepassword) or die(mysql_error()); @mysql_select_db($databasename) or die(mysql_error());

        $lines = 0; $queries = ""; $linearray = array();

        foreach(split($lineseparator,$csvcontent) as $line) {

            $lines++;

            $line = trim($line," \t");      $line = str_replace("\r","",$line);         /************************************   This line escapes the special character. remove it if entries are already escaped in the csv file   ************************************/   $line = str_replace("'","\'",$line);    /*************************************/         $linearray = explode($fieldseparator,$line);        $linemysql = implode("','",$linearray);         if($addauto)        $query = "insert into $databasetable values('','$linemysql');";     else        $query = "insert into $databasetable values('$linemysql');";        $queries .= $query . "\n";

            @mysql_query($query); }

        @mysql_close($con);

        if($save) {         if(!is_writable($outputfile)) {         echo "File is not writable, check permissions.\n";  }       else {      $file2 = fopen($outputfile,"w");
                        if(!$file2) {           echo "Error writing to the output file.\n";         }       else {          fwrite($file2,$queries);            fclose($file2);         }   }    }

        echo "Found a total of $lines records in this csv file.\n";


        ?>

编辑：错误：文件不可写，请检查权限。在此csv文件中共找到5124条记录。

Answer 1

一些提示：

Don't use the deprecated ext/mysql，当你可以使用ext / mysqli或PDO时。
不要将整个csv文件读入PHP变量。当文件为500MB时会发生什么？
当您可以使用内置函数fgetcsv()时，不要编写自定义PHP代码来解析csv数据。
当您可以使用prepared statements时，请勿为数据中的每一行创建新的SQL语句。
不要将外部文件中的数据插入到SQL语句中。这会带来SQL injection个漏洞，就像插入不受信任的用户输入一样。
当您可以使用MySQL的LOAD DATA INFILE命令时，请不要逐行解析和插入csv数据。它比逐行插入快20倍。

这是一个更简单的解决方案：

<?php
$databasehost = "localhost"; 
$databasename = "test"; 
$databasetable = "sample"; 
$databaseusername="test"; 
$databasepassword = ""; 
$fieldseparator = ","; 
$lineseparator = "\n";
$csvfile = "filename.csv";

if(!file_exists($csvfile)) {
    die("File not found. Make sure you specified the correct path.");
}

try {
    $pdo = new PDO("mysql:host=$databasehost;dbname=$databasename", 
        $databaseusername, $databasepassword,
        array(
            PDO::MYSQL_ATTR_LOCAL_INFILE => true,
            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION
        )
    );
} catch (PDOException $e) {
    die("database connection failed: ".$e->getMessage());
}

$affectedRows = $pdo->exec("
    LOAD DATA LOCAL INFILE ".$pdo->quote($csvfile)." INTO TABLE `$databasetable`
      FIELDS TERMINATED BY ".$pdo->quote($fieldseparator)."
      LINES TERMINATED BY ".$pdo->quote($lineseparator));

echo "Loaded a total of $affectedRows records from this csv file.\n";

?>

我在Mac上使用PHP 5.3.26进行了测试，在Linux上连接到MySQL 5.6.14。

Answer 2

试试这个：

<?php
// specify connection info
$connect = mysql_connect('localhost','root','12345');
if (!$connect)
{
   die('Could not <span id="IL_AD1" class="IL_AD">
    connect to</span> MySQL: ' . mysql_error());
}

$cid =mysql_select_db('test',$connect); //specify db name

define('CSV_PATH','C:/wamp/www/csvfile/'); // specify CSV file path

$csv_file = CSV_PATH . "infotuts.csv"; // Name of your CSV file
$csvfile = fopen($csv_file, 'r');
$theData = fgets($csvfile);
$i = 0;
while (!feof($csvfile))
{
   $csv_data[] = fgets($csvfile, 1024);
   $csv_array = explode(",", $csv_data[$i]);
   $insert_csv = array();
   $insert_csv['ID'] = $csv_array[0];
   $insert_csv['name'] = $csv_array[1];
   $insert_csv['email'] = $csv_array[2];
   $query = "INSERT INTO csvdata(ID,name,email)
     VALUES('','".$insert_csv['name']."','".$insert_csv['email']."')";
   $n=mysql_query($query, $connect );
   $i++;
}
fclose($csvfile);
echo "File data successfully imported to database!!";
mysql_close($connect); // closing connection
?>

Answer 3

**Data Import And Export**
**CSV To Mysql AND Mysql To CSV Using Mysqli**    
<!DOCTYPE html>
    <!--
    To change this license header, choose License Headers in Project Properties.
    To change this template file, choose Tools | Templates
    and open the template in the editor.
    -->
    <html>
        <head>
            <meta charset="UTF-8">
            <title></title>
        </head>
        <body>
            <form method="post">
                <button type="submit" name="btn_export">Data Export</button>
                <button type="submit" name="btn_import">Data Import</button>
            </form>
            <?php
            $host = "localhost";
            $uname = "root";
            $pass = "";
            $database = "demo"; //Change Your Database Name
            $conn = new mysqli($host, $uname, $pass, $database)or die("No Connection");
            echo mysql_error();
    //MYSQL MYADDMINPHP TO CSV
            if (isset($_REQUEST['btn_export']))
            {
                $data_op = "";
                $sql = $conn->query("select * from users"); //Change Your Table Name          
                while ($row1 = $sql->fetch_field())
                {
                    $data_op .= '"' . $row1->name . '",';
                }
                $data_op .="\n";
                while ($row = $sql->fetch_assoc())
                {
                    foreach ($row as $key => $value)
                    {
                        $data_op .='"' . $value . '",';
                    }
                    $data_op .="\n";
                }
                $filename = "Database.csv"; //Change File type CSV/TXT etc
                header('Content-type: application/csv'); //Change File type CSV/TXT etc
                header('Content-Disposition: attachment; filename=' . $filename);
                echo $data_op;
                exit;
            }
    //CSV To MYSQL MYADDMINPHP
            if (isset($_REQUEST['btn_import']))
            {
                $filename = 'Database.csv';
                $fp = fopen($filename, "r");
                while (($row = fgetcsv($fp, "40", ",")) != FALSE)
                {
                    $sql = "INSERT INTO users (name,pass,city,id) VALUES('" . implode("','", $row) . "')";
                    if (!$conn->query($sql))
                    {
                        echo '<br>Data No Insert<br>';
                    }
                }
                fclose($fp);
            }
            ?>
        </body>
    </html>

Answer 4

我认为您需要先在集合中转换CSV文件。之后，您可以添加循环和调用插入查询以插入数据。

在这里，您将获得将CSV文件转换为集合数组的代码。 best-way-to-upload-and-read-csv-file-in-php

用于将csv数据导入mysql的PHP脚本

4 个答案: