在 PHP 中为用户创建 CSV 文件

我在MySQL数据库中有数据。我向用户发送一个 URL，以将其数据作为 CSV 文件取出。

我有链接的电子邮件，MySQL查询等。

当他们单击链接时，我如何才能有一个弹出窗口来下载带有 MySQL 记录的 CVS？

我已经掌握了获得记录的所有信息。我只是不知道如何让 PHP 创建 CSV 文件并让他们下载扩展名为 .csv 的文件。

header("Content-Type: text/csv");
header("Content-Disposition: attachment; filename=file.csv");
function outputCSV($data) {
  $output = fopen("php://output", "wb");
  foreach ($data as $row)
    fputcsv($output, $row); // here you can change delimiter/enclosure
  fclose($output);
}
outputCSV(array(
  array("name 1", "age 1", "city 1"),
  array("name 2", "age 2", "city 2"),
  array("name 3", "age 3", "city 3")
));

php://output普特茨夫

尝试：

header("Content-type: text/csv");
header("Content-Disposition: attachment; filename=file.csv");
header("Pragma: no-cache");
header("Expires: 0");
echo "record1,record2,record3n";
die;

等

编辑：这是我用来选择性编码CSV字段的代码片段：

function maybeEncodeCSVField($string) {
    if(strpos($string, ',') !== false || strpos($string, '"') !== false || strpos($string, "n") !== false) {
        $string = '"' . str_replace('"', '""', $string) . '"';
    }
    return $string;
}

这是@Andrew发布的 php.net 函数的改进版本。

function download_csv_results($results, $name = NULL)
{
    if( ! $name)
    {
        $name = md5(uniqid() . microtime(TRUE) . mt_rand()). '.csv';
    }
    header('Content-Type: text/csv');
    header('Content-Disposition: attachment; filename='. $name);
    header('Pragma: no-cache');
    header("Expires: 0");
    $outstream = fopen("php://output", "wb");
    foreach($results as $result)
    {
        fputcsv($outstream, $result);
    }
    fclose($outstream);
}

它非常易于使用，并且非常适合MySQL(i(/PDO结果集。

download_csv_results($results, 'your_name_here.csv');

如果您已完成该页面，请记住在调用此内容后exit()。

除了已经说过的所有内容之外，您可能需要添加：

header("Content-Transfer-Encoding: UTF-8");

在处理包含多种语言的文件(如人名或城市(时，它非常有用。

创建您的文件，然后返回对它的引用，其中包含正确的标头以触发另存为 - 根据需要编辑以下内容。将您的 CSV 数据放入$csvdata。

$fname = 'myCSV.csv';
$fp = fopen($fname,'wb');
fwrite($fp,$csvdata);
fclose($fp);
header('Content-type: application/csv');
header("Content-Disposition: inline; filename=".$fname);
readfile($fname);

我知道这个线程有点旧，但供将来参考和像我这样的菜鸟：

这里的其他人都解释了如何创建CSV，但错过了问题的基本部分：如何链接。为了链接到CSV文件的下载，您只需链接到.php文件，该文件又响应为.csv文件。PHP 标头就是这样做的。这可以实现很酷的东西，例如向查询字符串添加变量并自定义输出：

<a href="my_csv_creator.php?user=23&amp;othervariable=true">Get CSV</a>

my_csv_creator.php可以使用查询字符串中给出的变量，例如使用不同的或自定义的数据库查询，更改CSV的列，个性化文件名等，例如：

User_John_Doe_10_Dec_11.csv

下面是一个使用 PDO 并包含列标题的完整工作示例：

$query = $pdo->prepare('SELECT * FROM test WHERE id=?');
$query->execute(array($id));    
$results = $query->fetchAll(PDO::FETCH_ASSOC);
download_csv_results($results, 'test.csv'); 
exit();

function download_csv_results($results, $name)
{            
    header('Content-Type: text/csv');
    header('Content-Disposition: attachment; filename='. $name);
    header('Pragma: no-cache');
    header("Expires: 0");
    $outstream = fopen("php://output", "wb");    
    fputcsv($outstream, array_keys($results[0]));
    foreach($results as $result)
    {
        fputcsv($outstream, $result);
    }
    fclose($outstream);
}

首先将数据制作为字符串，以逗号作为分隔符(用"，"分隔(。像这样的东西

$CSV_string="No,Date,Email,Sender Name,Sender Email n"; //making string, So "n" is used for newLine
$rand = rand(1,50); //Make a random int number between 1 to 50.
$file ="export/export".$rand.".csv"; //For avoiding cache in the client and on the server 
                                     //side it is recommended that the file name be different.
file_put_contents($file,$CSV_string);
/* Or try this code if $CSV_string is an array
    fh =fopen($file, 'w');
    fputcsv($fh , $CSV_string , ","  , "n" ); // "," is delimiter // "n" is new line.
    fclose($fh);
*/

您可以使用fputcsv函数将数据简单地写入CSV。让我们看一下下面的示例。将列表数组写入 CSV 文件

$list[] = array("Cars", "Planes", "Ships");
$list[] = array("Car's2", "Planes2", "Ships2");
//define headers for CSV 
header('Content-Type: text/csv; charset=utf-8');
header('Content-Disposition: attachment; filename=file_name.csv');
//write data into CSV
$fp = fopen('php://output', 'wb');
//convert data to UTF-8 
fprintf($fp, chr(0xEF).chr(0xBB).chr(0xBF));
foreach ($list as $line) {
    fputcsv($fp, $line);
}
fclose($fp);

嘿，效果很好....!!!感谢彼得·莫滕森和康纳·伯顿

<?php
header("Content-type: application/csv");
header("Content-Disposition: attachment; filename=file.csv");
header("Pragma: no-cache");
header("Expires: 0");
ini_set('display_errors',1);
$private=1;
error_reporting(E_ALL ^ E_NOTICE);
mysql_connect("localhost", "user", "pass") or die(mysql_error());
mysql_select_db("db") or die(mysql_error());
$start = $_GET["start"];
$end = $_GET["end"];
$query = "SELECT * FROM customers WHERE created>='{$start} 00:00:00'  AND created<='{$end} 23:59:59'   ORDER BY id";
$select_c = mysql_query($query) or die(mysql_error());
while ($row = mysql_fetch_array($select_c, MYSQL_ASSOC))
{
    $result.="{$row['email']},";
    $result.="n";
    echo $result;
}

？>

简单的方法 -

$data = array (
    'aaa,bbb,ccc,dddd',
    '123,456,789',
    '"aaa","bbb"');
$fp = fopen('data.csv', 'wb');
foreach($data as $line){
    $val = explode(",",$line);
    fputcsv($fp, $val);
}
fclose($fp);

因此，$data数组的每一行都将转到新创建的 CSV 文件的新行。它仅适用于 PHP 5 及更高版本。

要让它以 CSV 形式发送并给出文件名，请使用 header((：

http://us2.php.net/header

header('Content-type: text/csv');
header('Content-disposition: attachment; filename="myfile.csv"');

至于制作CSV本身，您只需循环浏览结果集，格式化输出并发送它，就像处理任何其他内容一样。

最简单的方法是使用专用的 CSV 类，如下所示：

$csv = new csv();
$csv->load_data(array(
    array('name'=>'John', 'age'=>35),
    array('name'=>'Adrian', 'age'=>23), 
    array('name'=>'William', 'age'=>57) 
));
$csv->send_file('age.csv');

而不是：

$query = "SELECT * FROM customers WHERE created>='{$start} 00:00:00'  AND created<='{$end} 23:59:59'   ORDER BY id";
$select_c = mysql_query($query) or die(mysql_error()); 
while ($row = mysql_fetch_array($select_c, MYSQL_ASSOC))
{
    $result.="{$row['email']},";
    $result.="n";
    echo $result;
}

用：

$query = "SELECT * FROM customers WHERE created>='{$start} 00:00:00'  AND created<='{$end} 23:59:59'   ORDER BY id";
$select_c = mysql_query($query) or die(mysql_error()); 
while ($row = mysql_fetch_array($select_c, MYSQL_ASSOC))
{
    echo implode(",", $row)."n";
}

已经有很好的解决方案了。我只是把总代码放进去，以便新手得到全面的帮助

<?php
extract($_GET); //you can send some parameter by query variable. I have sent table name in *table* variable
header("Content-type: text/csv");
header("Content-Disposition: attachment; filename=$table.csv");
header("Pragma: no-cache");
header("Expires: 0");
require_once("includes/functions.php"); //necessary mysql connection functions here
//first of all I'll get the column name to put title of csv file.
$query = "SHOW columns FROM $table";
$headers = mysql_query($query) or die(mysql_error());
$csv_head = array();
while ($row = mysql_fetch_array($headers, MYSQL_ASSOC))
{
    $csv_head[] =  $row['Field'];
}
echo implode(",", $csv_head)."n";
//now I'll bring the data.
$query = "SELECT * FROM $table";
$select_c = mysql_query($query) or die(mysql_error()); 
while ($row = mysql_fetch_array($select_c, MYSQL_ASSOC))
{
    foreach ($row as $key => $value) {
            //there may be separator (here I have used comma) inside data. So need to put double quote around such data.
        if(strpos($value, ',') !== false || strpos($value, '"') !== false || strpos($value, "n") !== false) {
            $row[$key] = '"' . str_replace('"', '""', $value) . '"';
        }
    }
    echo implode(",", $row)."n";
}
?>

我已将此代码保存在csv下载中.php

现在看看我如何使用这些数据下载csv文件

<a href="csv-download.php?table=tbl_vfm"><img title="Download as Excel" src="images/Excel-logo.gif" alt="Download as Excel" /><a/>

因此，当我单击链接时，它会下载文件，而无需将我带到浏览器上的csv-download.php页面。

编写自己的CSV代码可能是浪费你的时间，只需使用诸如league/csv之类的软件包 - 它为您处理所有困难的事情，文档很好，而且非常稳定/可靠：

http://csv.thephpleague.com/

您需要使用作曲家。如果你不知道是什么作曲家，我强烈建议你看看：https://getcomposer.org/

<?
    // Connect to database
    $result = mysql_query("select id
    from tablename
    where shid=3");
    list($DBshid) = mysql_fetch_row($result);
    /***********************************
    Write date to CSV file
    ***********************************/
    $_file = 'show.csv';
    $_fp = @fopen( $_file, 'wb' );
    $result = mysql_query("select name,compname,job_title,email_add,phone,url from UserTables where id=3");
    while (list( $Username, $Useremail_add, $Userphone, $Userurl) = mysql_fetch_row($result))
    {
        $_csv_data = $Username.','.$Useremail_add.','.$Userphone.','.$Userurl . "n";
        @fwrite( $_fp, $_csv_data);
    }
    @fclose( $_fp );
?>

如何使用PHP脚本编写CSV文件？其实我也在寻找那个。使用PHP是一件容易的事。fputs(处理程序，内容( - 这个函数对我有效。首先，您需要打开需要使用 fopen($CSVFileName， 'wb' 写入内容的文件(。

$CSVFileName = “test.csv”;
$fp = fopen($CSVFileName, ‘wb’);
//Multiple iterations to append the data using function fputs()
foreach ($csv_post as $temp)
{
    $line = “”;
    $line .= “Content 1″ . $comma . “$temp” . $comma . “Content 2″ . $comma . “16/10/2012″.$comma;
    $line .= “n”;
    fputs($fp, $line);
}

public function actionExportnotificationresponselogdata(( {

    $fileName = '/tmp/notificationresponselogs_' . date('d-m-Y-g-i-h') . '.csv';
    $f = fopen($fileName, 'w'); 
     fputs( $f, "xEFxBBxBF" ); //for utf8 support in csv

        $csv_fields=array();
        $csv_fields[] = 'heading1';
        $csv_fields[] = 'heading2';
        $csv_fields[] = 'heading3';
        $csv_fields[] = 'heading4';
        $csv_fields[] = 'heading5';
        $csv_fields[] = 'heading6';
        $csv_fields[] = 'heading7';
        $csv_fields[] = 'heading8';
        fputcsv($f, $csv_fields);
    
$notification_log_arr = $notificationObj->getNotificationResponseForExport($params); //result from database
    if (count($notification_log_arr) > 0) {
        $serialNumber=1;
    foreach ($notification_log_arr AS $notifaction) {
            
            $fields = array();
            $fields['serialNumber']= $serialNumber  ;
            $fields['fld_1']= $notifaction['fld_1'] ;
            $fields['fld_2']= $notifaction['fld_2'] ;
            $fields['fld_3']= $notifaction['fld_3'] ;
            $fields['fld_4']= $notifaction['fld_4'] ;
            $fields['fld_5']= $notifaction['fld_5'] ;
            $fields['fld_6']= $notifaction['fld_6'] ; 
            $fields['fld_7']= $notifaction['fld_7'] ; 
           // print_r($fields); die;
            fputcsv($f, $fields,",");
        
            $serialNumber++;  }
            fclose($f);
            if (file_exists($fileName)) {
                
                header("Content-type: application/csv");
                header("Content-Disposition: attachment; filename="."exportlog".date("Y-m-d_H:i").".csv");
                header("Content-length: " . filesize($fileName));
                header("Pragma: no-cache"); 
                header("Expires: 0");
                readfile($fileName);
                unlink($fileName);
                exit;
            }
}

在$output变量中放入 CSV 数据并使用正确的标头进行回显

header("Content-type: application/downloadrn");
header("Content-disposition: filename=filename.csvrnrn");
header("Content-Transfer-Encoding: ASCIIrn");
header("Content-length: ".strlen($output)."rn");
echo $output;

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