问题
I've created a custom solution in WordPress that will generate a CSV file to be downloaded by clicking a simple hyperlink, linked directly to this file. Instead of being prompted to download the file to the computer; the CSV opens in the the browser window instead.
FWIW I'm on Media Temple using a vanilla install of WordPress.
回答1:
Send the proper mime type
header('Content-type: text/csv');
And use the Content-Disposition header to tell it to download: http://www.jtricks.com/bits/content_disposition.html
header('Content-Disposition: attachment; filename="mycssfile.csv"');
You always want to send the proper mime type, otherwise firewalls, anti-virus software and some browsers may have issues with it...
回答2:
You can use PHP's header() function to change Content-type
header('Content-Type: application/csv');
header('Content-Disposition: attachment; filename="myFile.csv"');
The above code will force a prompt to the user for download. where myFile.csv should be replaced with the path to the file you want downloaded.
回答3:
This works:
$filename = 'export.csv';
header('Content-type: application/csv');
header('Content-Disposition: attachment; filename='.$filename);
Also, I personally do not like links on my sites, I like buttons. If you want a button to do for the export function you can use the code below. I just thought I would post it because it took me a bit to figure out the first time :)
<input type="button" value="Export to CSV" onClick="window.location.href='something.php?action=your_action';"/>
回答4:
You need to send the browser a MIME type of application/csv so it will offload the responsibility of handling the file to whatever the OS recommends (or user chooses).
In PHP (before any output is sent to the client):
header('Content-type: application/csv');
来源：https://stackoverflow.com/questions/2868225/not-being-prompted-to-download-csv-file