Some browsers have installed pdf open programs associated with browsers, so when writing the pdf path directly, they open the pdf instead of downloading. Next, let's say that if they just download, not browse.
Create a php file
|The code is as follows:||Copy code|
$ File = $ _ GET ['file'];
$ Arr = explode ('/', $ file );
Header ('content-type: application/pdf ');
Header ('content-Disposition: attachment; filename = "'. array_pop ($ arr ).'"');
Readfile (file );
Add the code to convert the pdf path into a language recognized by the browser and tell the browser
Column/upload. php? File =/aa/aa.pdf
In this way, everything can be downloaded instead of being opened.