PHP Download function

Download In two cases, one is to download the file separately:
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$file _name = "Abc.exe";
$file _dir = "/xxx/";
if (!file_exists ($file _dir. $file _name)) {//check whether the file exists
echo "File not found";
Exit
} else {
$file = fopen ($file _dir.   $file _name, "R"); Open File
Input File Label
Header ("Content-type:application/octet-stream");
Header ("Accept-ranges:bytes");
Header ("Accept-length:". FileSize ($file _dir. $file _name));
Header ("content-disposition:attachment;   Filename= ". $file _name);
Output file contents
Echo fread ($file, FileSize ($file _dir. $file _name));
Fclose ($file);
Exit;}
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Alternatively, the file path contains an "http" or "FTP" URL:
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$file _name = "Abc.exe";
$file _dir = "http://www.xrss.cn/";
$file = @ fopen ($file _dir. $file _name, "R");
if (! $file) {
echo "File not found";
} else {
Header ("Content-type:application/octet-stream");
Header ("content-disposition:attachment;   Filename= ". $file _name);
while (!feof ($file)) {
Echo fread ($file, 50000);
}
Fclose ($file);
}
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