PHP：一口气向MySQL插入10.000行

我需要读取一个具有约10.000行的excel文件,并将其保存到MySQL中的表中.我使用的方法是创建一个foreach()循环,并在其内部准备,绑定和执行每一行.

执行时间大约是130秒,我认为这很糟糕.那是在localhost上,因此当脚本将实时运行(共享主机)时,执行时间肯定会更长.

这是代码

ini_set('max_execution_time', 300);

$time_start = microtime(true);

$user = 'root';
$pass = '';
$driver_options = array(
    PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES 'utf8'",
    PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
    PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_OBJ,
);
try {
    $dbh = new PDO('mysql:host=127.0.0.1;dbname=excel', $user, $pass, $driver_options);
} catch (PDOException $e) {
    print "Error!: " . $e->getMessage() . "<br/>";
    die();
}

set_include_path(get_include_path() . PATH_SEPARATOR . 'Classes/');

/** PHPExcel_IOFactory */
include 'PHPExcel/IOFactory.php';
$inputFileName = 'original.xls';
try {
    $objPHPExcel = PHPExcel_IOFactory::load($inputFileName);
} catch(Exception $e) {
    die('Error loading file "'.pathinfo($inputFileName,PATHINFO_BASENAME).'": '.$e->getMessage());
}

/*
    cap [X] - loc [AK]
    targa [D]
    fabbrica [F]
    provincia di residenza [V] - loc [AI]
    comune di residenza [W] - loc [AJ]
    data prima immatricolazione [AB]
    dati anagrafici [T] - loc [AG]
*/

$xls = $objPHPExcel->getActiveSheet()->toArray(null,true,true,true);
$headers = $xls[1];
$loops = 0;
$rows = array_slice($xls, 1);

foreach ( $rows as $row ) {

    $excelData = array(
        'targa'                 => $row['D'],
        'fabbrica'              => $row['F'],
        'immatricolazione'      => $row['AB'],
        'cap'                   => $row['AK'] == '' ? $row['X'] : $row['AK'],
        'datiAnagrafici'        => $row['AG'] == '' ? $row['T'] : $row['AG'],
        'comuneResidenza'       => $row['AJ'] == '' ? $row['W'] : $row['AJ'],
        'provinciaResidenza'    => $row['AI'] == '' ? $row['V'] : $row['AI']
    );

    $insert = $dbh->prepare("
        INSERT INTO 
            data(targa, fabbrica, immatricolazione, cap, datiAnagrafici, comuneResidenza, provinciaResidenza)
            VALUES(:targa, :fabbrica, :immatricolazione, :cap, :datiAnagrafici, :comuneResidenza, :provinciaResidenza)
    ");
    $insert->execute($excelData);
    if ( $insert->rowCount() != 1 ) {
        echo 'Script interrupted at loop nr. '.$loops;
        break;
    }

    ++$loops;

}

$time_end = microtime(true);

$execution_time = ($time_end - $time_start);

echo '<b>Total Execution Time:</b> '.$execution_time.' s';

有什么办法可以优化代码性能吗？循环有问题吗？

谢谢.

解决方法:

如果可以轻松地convert the XLS to CSV,则可以在mysql中使用LOAD DATA INFILE语句.这样会更快.

标签：performance,execution-time,mysql,php
来源： https://codeday.me/bug/20191029/1960936.html