What would it be like to not having to worry about old versions of Internet Explorer? Note: the quotes in the filename are required in case the file may contain spaces. The code above will fail in IE6 unless the following are added:. Now, the use of Cache-Control is wrong in this case, especially to both values set to zero, according to Microsoft , but it works in IE6 and IE7 and later ignores it so no harm done.
If you still get strange results when downloading especially in IE , make sure that the PHP output compression is disabled, as well as any server compression sometimes the server inadvertently applies compression on the output produced by the PHP script.
Historically it had some performance issues and while the documentation claims there are no memory problems, real-life scenarios beg to differ — output buffering and other subtle things. Regardless, if you need byte ranges support, you still have to output the old-fashioned way.
You just output a header and the module takes care of the rest. This is the source of many seemingly obscure errors. If you have output buffering, the file will not be sent to the user in chunks but only at the end of the script.
At the start of your script, after checking the file if it exists, etc. Last updated:. December 15, The PHP Group. User rating:. After that, check out the online manual. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Ask Question. Asked 13 years, 3 months ago. Active 5 months ago. Viewed k times. Improve this question. Community Bot 1 1 1 silver badge. The uses of this function are shown in the following two examples. In this example, we will create an HTML file with the following code, where the file name will be passed as a parameter of the URL named path , and the value of this parameter will be passed to the PHP file named download.
We will create the PHP file with the following code to download the file forcibly. Next, the header function is used to set the necessary header information before using the readfile function. The basename function is used to retrieve the filename, and the filesize function is used to read the size of the file in bytes, which will be shown in the opening dialog box to download the file.
The flush function is used to clear the output buffer. The readfile function is used with the filename only, here. Output The following output will appear after clicking the download link of the image file. Cancel the download. To put the brakes on a download that's already started, select Cancel download , then select Cancel download again to confirm.
Block the app. Don't want the app to download online-only files? Blocking apps could make them unstable. If you trust an app and open online-only files with it frequently, don't block it. Tip: Don't want notifications for automatic file downloads?
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