Php supports code for multipart and resumable file download.

This article introduces php stream download, which supports multipart and resumable download. If you need it, you can check it. Code example: Copy code dowmfiledirname({file=}.'nokia-alwayshere.mp3 '; the file to be downloaded, absolute or relative to $ dowmName 'nokia-Alw

This article introduces php stream download, which supports multipart and resumable download. If you need it, you can check it. The Code is as follows: $ dowmFile = dirname (_ FILE _). '/Nokia-Always Here.mp3'; // the FILE to be downloaded, absolute or relative to $ dowmName = 'nokia-Alw

This article introduces php stream download, which supports multipart and resumable download. If you need it, you can check it. The Code is as follows:

$ DowmFile = dirname (_ FILE _). '/Nokia-Always Here.mp3'; // the object to be downloaded, either absolute or relative
$ DowmName = 'nokia-Always Here.mp3 ′;
Ob_start ();
Getlocalfile ($ dowmFile, $ dowmName );
Flush ();
Ob_flush ();
Function getlocalfile ($ fname, $ filename = "){
$ Fsize = filesize ($ fname );
Header ('cache-Control: public ');
Header ('pragma: public ');
Header ('Accept-Ranges: bytes ');
Header ('Connection: close ');
Header ('content-Type: '. MIMEType ($ fname ));
// Header ('content-Type: application/octet-stream ');
If (isset ($ filename {0 })){
Header ('content-Disposition: attachment; filename = '. $ filename );
}
If ($ fp = @ fopen ($ fname, 'rb ')){
$ Start = 0;
$ End = $ fsize;
$ IsRange = isset ($ _ SERVER ['HTTP _ range']) & ($ _ SERVER ['HTTP _ range']! = ");
If ($ isRange ){
Preg_match ('/^ bytes = ([0-9] *)-([0-9] *) $/I', $ _ SERVER ['HTTP _ range'], $ match );
$ Start = $ match [1];
$ End = $ match [2];
$ Isset_start = isset ($ start {0 });
$ Isset_end = isset ($ end {0 });
If ($ isset_start & $ isset_end ){
// Multipart download
If ($ start >=$ fsize | $ start <0 | $ start> $ end ){
$ Start = 0;
$ End = $ fsize;
} Else if ($ end >=$ fsize ){
$ End = $ fsize-$ start;
} Else {
$ End-= $ start-1;
}
} Else if ($ isset_start &&! $ Isset_end ){
// Specify the position to end
If ($ start >=$ fsize | $ start <0 ){
$ Start = 0;
$ End = $ fsize;
} Else {
$ End = $ fsize-$ start;
}
} Else if (! $ Isset_start & $ isset_end ){
// Last n Bytes
$ End = $ end> $ fsize? $ Fsize: $ end;
$ Start = $ fsize-$ end;
} Else {
$ Start = 0;
$ End = $ fsize;
}
}
If ($ isRange ){
Fseek ($ fp, $ start );
Header ('HTTP/1.1 206 Partial content ');
Header ('content-Length: '. $ end );
Header ('content-Ranges: bytes '. $ start.'-'. ($ end + $ start-1).'/'. $ fsize );
} Else {
Header ('content-Length: '. $ fsize );
}
If (function_exists ('fpassthru') & ($ end + $ start) ==$ fsize ){
Fpassthru ($ fp );
} Else {
Echo fread ($ fp, $ end );
}
} Else {
Header ('content-Length: '. $ fsize );
Readfile ($ fname );
}
// @ Header ("Content-Type:". mime_content_type ($ fname ));
}
Function MIMEType ($ fname ){
$ FileSuffix = strtolower (substr ($ fname, strrpos ($ fname, '.') + 1 ));
Switch ($ fileSuffix ){
Case 'av ':
Return 'video/msvideo ';
Case 'vps ':
Return 'video/x-ms-wmv ';
Case 'txt ':
Return 'text/plain ';
Case 'htm ':
Case 'html ':
Case 'php ':
Return 'text/html ';
Case 'css ':
Return 'text/css ';
Case 'js ':
Return 'application/javascript ';
Case 'json ':
Case 'xml ':
Case 'zip ':
Case 'pdf ':
Case 'rtf ':
Case 'tar ':
Return 'application/'. $ fileSuffix;
Case 'swf ':
Return 'application/x-shockwave-flash ';
Case 'flv ':
Return 'video/x-flv ';
Case 'jpe ':
Case 'jpg ':
Return 'image/jpeg ';
Case 'jpeg ':
Case 'png ':
Case 'gif ':
Case 'bmp ':
Case 'tiff ':
Return 'image/'. $ fileSuffix;
Case 'ico ':
Return 'image/vnd. microsoft. icon ';
Case 'tif ':
Return 'image/tiff ';
Case 'svg ':
Case 'svgz ':
Return 'image/svg + xml ';
Case 'rar ':
Return 'application/x-rar-compressed ';
Case 'exe ':
Case 'msi ':
Return 'application/x-msdownload ';
Case 'cab ':
Return 'application/vnd. ms-cab-compressed ';
Case 'aif ':
Return 'audio/aiff ';
Case 'mpg ':
Case 'mpe ':
Case 'mp3 ′:
Return 'audio/mpeg ';
Case 'mpeg ':
Case 'wav ':
Case 'aiff ':
Return 'audio/'. $ fileSuffix;
Case 'qt ':
Case 'mov ':
Return 'video/quicktime ';
Case 'psd ':
Return 'image/vnd. adobe. photoshop ';
Case 'ai ':
Case 'eps ':
Case 'ps ':
Return 'application/postscript ';
Case 'Doc ':
Case 'docx ':
Return 'application/msword ';
Case 'xls ':
Case 'xlt ':
Case 'xlm ':
Case 'xld ':
Case 'xla ':
Case 'xlc ':
Case 'xlw ':
Case 'xll ':
Return 'application/vnd. ms-excel ';
Case 'ppt ':
Case 'pps ':
Return 'application/vnd. ms-powerpoint ';
Case 'odt ':
Return 'application/vnd. oasis. opendocument. text ';
Case 'ods ':
Return 'application/vnd. oasis. opendocument. spreadsheet ';
Default:
If (function_exists ('mime _ content_type ')){
$ FileSuffix = mime_content_type ($ filename );
} Else {
$ FileSuffix = 'application/octet-stream ';
}
Return $ fileSuffix;
Break;
}
}

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