php 用php创建csv文件
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Creating csv file with php
提问by andrei.godea
I want to create a csv file, but when I run the code, it returns a blank page and no csv file. I use PHP 5. I use the following code:
我想创建一个 csv 文件，但是当我运行代码时，它返回一个空白页并且没有 csv 文件。我使用 PHP 5。我使用以下代码：
<?php
$data = array ('aaa,bbb,ccc,dddd',
'123,456,789',
'"aaa","bbb"');
$fp = fopen('data.csv', 'w');
foreach($data as $line){
$val = explode(",",$line);
fputcsv($fp, $val);
}
fclose($fp);
?>
Thank you!
谢谢！
回答by Baba
Its blank because you are writing to file. you should write to outputusing php://outputinstead and also send header information to indicate that it's csv.
它是空白的，因为您正在写入file. 您应该写入outputusingphp://output并发送标头信息以指示它是 csv。
Example
例子
header('Content-Type: text/csv');
header('Content-Disposition: attachment; filename="sample.csv"');
$data = array(
'aaa,bbb,ccc,dddd',
'123,456,789',
'"aaa","bbb"'
);
$fp = fopen('php://output', 'wb');
foreach ( $data as $line ) {
$val = explode(",", $line);
fputcsv($fp, $val);
}
fclose($fp);
回答by Buzut
@Baba's answer is great. But you don't need to use explodebecause fputcsvtakes an array as a parameter
@Baba 的回答很棒。但是你不需要使用explode因为fputcsv需要一个数组作为参数
For instance, if you have a three columns, four lines document, here's a more straight version:
例如，如果您有一个三列四行的文档，这里有一个更直接的版本：
header('Content-Type: text/csv');
header('Content-Disposition: attachment; filename="sample.csv"');
$user_CSV[0] = array('first_name', 'last_name', 'age');
// very simple to increment with i++ if looping through a database result
$user_CSV[1] = array('Quentin', 'Del Viento', 34);
$user_CSV[2] = array('Antoine', 'Del Torro', 55);
$user_CSV[3] = array('Arthur', 'Vincente', 15);
$fp = fopen('php://output', 'wb');
foreach ($user_CSV as $line) {
// though CSV stands for "comma separated value"
// in many countries (including France) separator is ";"
fputcsv($fp, $line, ',');
}
fclose($fp);
回答by Channaveer Hakari
Just in case if someone is wondering to save the CSV file to a specific path for email attachments. Then it can be done as follows
以防万一有人想将 CSV 文件保存到电子邮件附件的特定路径。然后可以按如下方式完成
I know I have added a lot of comments just for newbies :)
我知道我已经为新手添加了很多评论:)
I have added an example so that you can summarize well.
我添加了一个示例，以便您可以很好地总结。
$activeUsers = /** Query to get the active users */
/** Following is the Variable to store the Users data as
CSV string with newline character delimiter,
its good idea of check the delimiter based on operating system */
$userCSVData = "Name,Email,CreatedAt\n";
/** Looping the users and appending to my earlier csv data variable */
foreach ( $activeUsers as $user ) {
$userCSVData .= $user->name. "," . $user->email. "," . $user->created_at."\n";
}
/** Here you can use with H:i:s too. But I really dont care of my old file */
$todayDate = date('Y-m-d');
/** Create Filname and Path to Store */
$fileName = 'Active Users '.$todayDate.'.csv';
$filePath = public_path('uploads/'.$fileName); //I am using laravel helper, in case if your not using laravel then just add absolute or relative path as per your requirements and path to store the file
/** Just in case if I run the script multiple time
I want to remove the old file and add new file.
And before deleting the file from the location I am making sure it exists */
if(file_exists($filePath)){
unlink($filePath);
}
$fp = fopen($filePath, 'w+');
fwrite($fp, $userCSVData); /** Once the data is written it will be saved in the path given */
fclose($fp);
/** Now you can send email with attachments from the $filePath */
NOTE: The following is a very bad idea to increase the memory_limitand time limit, but I have only added to make sure if anyone faces the problem of connection time out or any other. Make sure to find out some alternative before sticking to it.
注意：以下是增加memory_limit和time limit 的一个非常糟糕的主意 ，但我添加只是为了确保是否有人面临连接超时或任何其他问题。在坚持之前一定要找到一些替代方案。
You have to add the following at the start of the above script.
您必须在上述脚本的开头添加以下内容。
ini_set("memory_limit", "10056M");
set_time_limit(0);
ini_set('mysql.connect_timeout', '0');
ini_set('max_execution_time', '0');
