通过 PHP 导出到 CSV

假设我有一个数据库。有没有一种方法，我可以导出什么我从数据库到一个 CSV 文件(和文本文件[如果可能])通过 PHP？

370584 次浏览
小开

您可以使用此命令导出日期。

<?php


$list = array (
array('aaa', 'bbb', 'ccc', 'dddd'),
array('123', '456', '789'),
array('"aaa"', '"bbb"')
);


$fp = fopen('file.csv', 'w');


foreach ($list as $fields) {
fputcsv($fp, $fields);
}


fclose($fp);
?>

首先，您必须将来自 mysql 服务器的数据加载到一个数组中

小开

我建议使用嵌套的换行符和引号解决一些问题。

小开
最佳答案

我个人使用这个函数从任何数组创建 CSV 内容。

function array2csv(array &$array)
{
if (count($array) == 0) {
return null;
}
ob_start();
$df = fopen("php://output", 'w');
fputcsv($df, array_keys(reset($array)));
foreach ($array as $row) {
fputcsv($df, $row);
}
fclose($df);
return ob_get_clean();
}

然后你可以让你的用户下载这个文件，比如:

function download_send_headers($filename) {
// disable caching
$now = gmdate("D, d M Y H:i:s");
header("Expires: Tue, 03 Jul 2001 06:00:00 GMT");
header("Cache-Control: max-age=0, no-cache, must-revalidate, proxy-revalidate");
header("Last-Modified: {$now} GMT");


// force download
header("Content-Type: application/force-download");
header("Content-Type: application/octet-stream");
header("Content-Type: application/download");


// disposition / encoding on response body
header("Content-Disposition: attachment;filename={$filename}");
header("Content-Transfer-Encoding: binary");
}

用法例子:

download_send_headers("data_export_" . date("Y-m-d") . ".csv");
echo array2csv($array);
die();
小开

就像@Dampes 8N 说的:

$result = mysql_query($sql,$conecction);
$fp = fopen('file.csv', 'w');
while($row = mysql_fetch_assoc($result)){
fputcsv($fp, $row);
}
fclose($fp);

希望这个能帮上忙。

小开

这里附上预先编写的代码。你只需复制和粘贴你的代码就可以使用它:

Https://gist.github.com/umairidrees/8952054#file-php-save-db-table-as-csv

小开

顺便说一句，连接比 fputcsv甚至是 implode都要快(我是认真的) ，而且文件大小也更小:

// The data from Eternal Oblivion is an object, always
$values = (array) fetchDataFromEternalOblivion($userId, $limit = 1000);


// ----- fputcsv (slow)
// The code of @Alain Tiemblo is the best implementation
ob_start();
$csv = fopen("php://output", 'w');
fputcsv($csv, array_keys(reset($values)));
foreach ($values as $row) {
fputcsv($csv, $row);
}
fclose($csv);
return ob_get_clean();


// ----- implode (slow, but file size is smaller)
$csv = implode(",", array_keys(reset($values))) . PHP_EOL;
foreach ($values as $row) {
$csv .= '"' . implode('","', $row) . '"' . PHP_EOL;
}
return $csv;
// ----- concatenation (fast, file size is smaller)
// We can use one implode for the headers =D
$csv = implode(",", array_keys(reset($values))) . PHP_EOL;
$i = 1;
// This is less flexible, but we have more control over the formatting
foreach ($values as $row) {
$csv .= '"' . $row['id'] . '",';
$csv .= '"' . $row['name'] . '",';
$csv .= '"' . date('d-m-Y', strtotime($row['date'])) . '",';
$csv .= '"' . ($row['pet_name'] ?: '-' ) . '",';
$csv .= PHP_EOL;
}
return $csv;

这是对几个报告进行优化的结果，从一万行到数千行不等。这三个示例在1000行以下运行良好，但在数据更大时失败。

小开

如果在标题中指定文件的大小，则可以处理超过100行 在您自己的类中简单地调用 get ()方法

function setHeader($filename, $filesize)
{
// disable caching
$now = gmdate("D, d M Y H:i:s");
header("Expires: Tue, 01 Jan 2001 00:00:01 GMT");
header("Cache-Control: max-age=0, no-cache, must-revalidate, proxy-revalidate");
header("Last-Modified: {$now} GMT");


// force download
header("Content-Type: application/force-download");
header("Content-Type: application/octet-stream");
header("Content-Type: application/download");
header('Content-Type: text/x-csv');


// disposition / encoding on response body
if (isset($filename) && strlen($filename) > 0)
header("Content-Disposition: attachment;filename={$filename}");
if (isset($filesize))
header("Content-Length: ".$filesize);
header("Content-Transfer-Encoding: binary");
header("Connection: close");
}


function getSql()
{
// return you own sql
$sql = "SELECT id, date, params, value FROM sometable ORDER BY date;";
return $sql;
}


function getExportData()
{
$values = array();


$sql = $this->getSql();
if (strlen($sql) > 0)
{
$result = dbquery($sql); // opens the database and executes the sql ... make your own ;-)
$fromDb = mysql_fetch_assoc($result);
if ($fromDb !== false)
{
while ($fromDb)
{
$values[] = $fromDb;
$fromDb = mysql_fetch_assoc($result);
}
}
}
return $values;
}


function get()
{
$values = $this->getExportData(); // values as array
$csv = tmpfile();


$bFirstRowHeader = true;
foreach ($values as $row)
{
if ($bFirstRowHeader)
{
fputcsv($csv, array_keys($row));
$bFirstRowHeader = false;
}


fputcsv($csv, array_values($row));
}


rewind($csv);


$filename = "export_".date("Y-m-d").".csv";


$fstat = fstat($csv);
$this->setHeader($filename, $fstat['size']);


fpassthru($csv);
fclose($csv);
}
小开 
<?php
      

// Database Connection
include "includes/db/db.php";
           

          

$query = mysqli_query($connection,"SELECT * FROM team_attendance JOIN team_login ON
team_attendance.attendance_user_id=team_login.user_id where
attendance_activity_name='Checked-In' order by
team_attendance.attendance_id ASC"); // Get data from Database from
demo table
           

           

$delimiter = ",";
$filename = "attendance" . date('Ymd') . ".csv"; // Create file name
               

//create a file pointer
$f = fopen('php://memory', 'w');
               

//set column headers
$fields = array('ID', 'Employee Name', 'Check In Time', 'Check Out Time', 'Date');
fputcsv($f, $fields, $delimiter);
               

//output each row of the data, format line as csv and write to file pointer
while($row = $query->fetch_assoc()){
$date=date('d-m-Y',$row['attendance_date']);
$lineData = array($row['attendance_id'], $row['user_name'], $row['attendance_time'],
$row['check_out_time'],$date);
fputcsv($f, $lineData, $delimiter);
}
               

//move back to beginning of file
fseek($f, 0);
               

//set headers to download file rather than displayed
header('Content-Type: text/csv');
header('Content-Disposition: attachment; filename="' . $filename . '";');
               

//output all remaining data on a file pointer
fpassthru($f);
?>

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