diff --git a/php/download.php b/php/download.php
new file mode 100644
index 0000000..25f3a65
--- /dev/null
+++ b/php/download.php
@@ -0,0 +1,291 @@
+<?php
+/**
+* Скрипт  для изучения.
+* Загрузка больших файлов по частям на сервер
+*
+/
+
+
+/*ini settings*/ 
+set_time_limit(0); 
+ini_set('memory_limit', '512M'); 
+
+//DOWNLOAD SCRIPT 
+$filePath = "G:/Software/versions/..PATH TO DOWNLOAD FILE...zip"; // set your download file path here. 
+download($filePath); // calls download function 
+function download($filePath) 
+{     
+    if(!empty($filePath)) 
+    { 
+        $fileInfo = pathinfo($filePath); 
+        $fileName  = $fileInfo['basename']; 
+        $fileExtnesion   = $fileInfo['extension']; 
+        $default_contentType = "application/octet-stream"; 
+        $content_types_list = mimeTypes(); 
+        // to find and use specific content type, check out this IANA page : http://www.iana.org/assignments/media-types/media-types.xhtml 
+        if (array_key_exists($fileExtnesion, $content_types_list))  
+        { 
+            $contentType = $content_types_list[$fileExtnesion]; 
+        } 
+        else 
+        { 
+            $contentType =  $default_contentType; 
+        } 
+        if(file_exists($filePath)) 
+        { 
+            $size = filesize($filePath); 
+            $offset = 0; 
+            $length = $size; 
+            //HEADERS FOR PARTIAL DOWNLOAD FACILITY BEGINS 
+            if(isset($_SERVER['HTTP_RANGE'])) 
+            { 
+                preg_match('/bytes=(\d+)-(\d+)?/', $_SERVER['HTTP_RANGE'], $matches); 
+                $offset = intval($matches[1]); 
+                $length = intval($matches[2]) - $offset; 
+                $fhandle = fopen($filePath, 'r'); 
+                fseek($fhandle, $offset); // seek to the requested offset, this is 0 if it's not a partial content request 
+                $data = fread($fhandle, $length); 
+                fclose($fhandle); 
+                header('HTTP/1.1 206 Partial Content'); 
+                header('Content-Range: bytes ' . $offset . '-' . ($offset + $length) . '/' . $size); 
+            }//HEADERS FOR PARTIAL DOWNLOAD FACILITY BEGINS 
+            //USUAL HEADERS FOR DOWNLOAD 
+            header("Content-Disposition: attachment;filename=".$fileName); 
+            header('Content-Type: '.$contentType); 
+            header("Accept-Ranges: bytes"); 
+            header("Pragma: public"); 
+            header("Expires: -1"); 
+            header("Cache-Control: no-cache"); 
+            header("Cache-Control: public, must-revalidate, post-check=0, pre-check=0"); 
+            header("Content-Length: ".filesize($filePath)); 
+            $chunksize = 8 * (1024 * 1024); //8MB (highest possible fread length) 
+            if ($size > $chunksize) 
+            { 
+              $handle = fopen($_FILES["file"]["tmp_name"], 'rb'); 
+              $buffer = ''; 
+              while (!feof($handle) && (connection_status() === CONNECTION_NORMAL))  
+              { 
+                $buffer = fread($handle, $chunksize); 
+                print $buffer; 
+                ob_flush(); 
+                flush(); 
+              } 
+              if(connection_status() !== CONNECTION_NORMAL) 
+              { 
+                echo "Connection aborted"; 
+              } 
+              fclose($handle); 
+            } 
+            else  
+            { 
+              ob_clean(); 
+              flush(); 
+              readfile($filePath); 
+            } 
+         } 
+         else 
+         { 
+           echo 'File does not exist!'; 
+         } 
+    } 
+    else 
+    { 
+        echo 'There is no file to download!'; 
+    } 
+}     
+     
+
+/* Function to get correct MIME type for download */ 
+function mimeTypes() 
+{ 
+/* Just add any required MIME type if you are going to download something not listed here.*/ 
+$mime_types = array("323" => "text/h323", 
+                    "acx" => "application/internet-property-stream", 
+                    "ai" => "application/postscript", 
+                    "aif" => "audio/x-aiff", 
+                    "aifc" => "audio/x-aiff", 
+                    "aiff" => "audio/x-aiff", 
+                    "asf" => "video/x-ms-asf", 
+                    "asr" => "video/x-ms-asf", 
+                    "asx" => "video/x-ms-asf", 
+                    "au" => "audio/basic", 
+                    "avi" => "video/x-msvideo", 
+                    "axs" => "application/olescript", 
+                    "bas" => "text/plain", 
+                    "bcpio" => "application/x-bcpio", 
+                    "bin" => "application/octet-stream", 
+                    "bmp" => "image/bmp", 
+                    "c" => "text/plain", 
+                    "cat" => "application/vnd.ms-pkiseccat", 
+                    "cdf" => "application/x-cdf", 
+                    "cer" => "application/x-x509-ca-cert", 
+                    "class" => "application/octet-stream", 
+                    "clp" => "application/x-msclip", 
+                    "cmx" => "image/x-cmx", 
+                    "cod" => "image/cis-cod", 
+                    "cpio" => "application/x-cpio", 
+                    "crd" => "application/x-mscardfile", 
+                    "crl" => "application/pkix-crl", 
+                    "crt" => "application/x-x509-ca-cert", 
+                    "csh" => "application/x-csh", 
+                    "css" => "text/css", 
+                    "dcr" => "application/x-director", 
+                    "der" => "application/x-x509-ca-cert", 
+                    "dir" => "application/x-director", 
+                    "dll" => "application/x-msdownload", 
+                    "dms" => "application/octet-stream", 
+                    "doc" => "application/msword", 
+                    "dot" => "application/msword", 
+                    "dvi" => "application/x-dvi", 
+                    "dxr" => "application/x-director", 
+                    "eps" => "application/postscript", 
+                    "etx" => "text/x-setext", 
+                    "evy" => "application/envoy", 
+                    "exe" => "application/octet-stream", 
+                    "fif" => "application/fractals", 
+                    "flr" => "x-world/x-vrml", 
+                    "gif" => "image/gif", 
+                    "gtar" => "application/x-gtar", 
+                    "gz" => "application/x-gzip", 
+                    "h" => "text/plain", 
+                    "hdf" => "application/x-hdf", 
+                    "hlp" => "application/winhlp", 
+                    "hqx" => "application/mac-binhex40", 
+                    "hta" => "application/hta", 
+                    "htc" => "text/x-component", 
+                    "htm" => "text/html", 
+                    "html" => "text/html", 
+                    "htt" => "text/webviewhtml", 
+                    "ico" => "image/x-icon", 
+                    "ief" => "image/ief", 
+                    "iii" => "application/x-iphone", 
+                    "ins" => "application/x-internet-signup", 
+                    "isp" => "application/x-internet-signup", 
+                    "jfif" => "image/pipeg", 
+                    "jpe" => "image/jpeg", 
+                    "jpeg" => "image/jpeg", 
+                    "jpg" => "image/jpeg", 
+                    "js" => "application/x-javascript", 
+                    "latex" => "application/x-latex", 
+                    "lha" => "application/octet-stream", 
+                    "lsf" => "video/x-la-asf", 
+                    "lsx" => "video/x-la-asf", 
+                    "lzh" => "application/octet-stream", 
+                    "m13" => "application/x-msmediaview", 
+                    "m14" => "application/x-msmediaview", 
+                    "m3u" => "audio/x-mpegurl", 
+                    "man" => "application/x-troff-man", 
+                    "mdb" => "application/x-msaccess", 
+                    "me" => "application/x-troff-me", 
+                    "mht" => "message/rfc822", 
+                    "mhtml" => "message/rfc822", 
+                    "mid" => "audio/mid", 
+                    "mny" => "application/x-msmoney", 
+                    "mov" => "video/quicktime", 
+                    "movie" => "video/x-sgi-movie", 
+                    "mp2" => "video/mpeg", 
+                    "mp3" => "audio/mpeg", 
+                    "mpa" => "video/mpeg", 
+                    "mpe" => "video/mpeg", 
+                    "mpeg" => "video/mpeg", 
+                    "mpg" => "video/mpeg", 
+                    "mpp" => "application/vnd.ms-project", 
+                    "mpv2" => "video/mpeg", 
+                    "ms" => "application/x-troff-ms", 
+                    "mvb" => "application/x-msmediaview", 
+                    "nws" => "message/rfc822", 
+                    "oda" => "application/oda", 
+                    "p10" => "application/pkcs10", 
+                    "p12" => "application/x-pkcs12", 
+                    "p7b" => "application/x-pkcs7-certificates", 
+                    "p7c" => "application/x-pkcs7-mime", 
+                    "p7m" => "application/x-pkcs7-mime", 
+                    "p7r" => "application/x-pkcs7-certreqresp", 
+                    "p7s" => "application/x-pkcs7-signature", 
+                    "pbm" => "image/x-portable-bitmap", 
+                    "pdf" => "application/pdf", 
+                    "pfx" => "application/x-pkcs12", 
+                    "pgm" => "image/x-portable-graymap", 
+                    "pko" => "application/ynd.ms-pkipko", 
+                    "pma" => "application/x-perfmon", 
+                    "pmc" => "application/x-perfmon", 
+                    "pml" => "application/x-perfmon", 
+                    "pmr" => "application/x-perfmon", 
+                    "pmw" => "application/x-perfmon", 
+                    "pnm" => "image/x-portable-anymap", 
+                    "pot" => "application/vnd.ms-powerpoint", 
+                    "ppm" => "image/x-portable-pixmap", 
+                    "pps" => "application/vnd.ms-powerpoint", 
+                    "ppt" => "application/vnd.ms-powerpoint", 
+                    "prf" => "application/pics-rules", 
+                    "ps" => "application/postscript", 
+                    "pub" => "application/x-mspublisher", 
+                    "qt" => "video/quicktime", 
+                    "ra" => "audio/x-pn-realaudio", 
+                    "ram" => "audio/x-pn-realaudio", 
+                    "ras" => "image/x-cmu-raster", 
+                    "rgb" => "image/x-rgb", 
+                    "rmi" => "audio/mid", 
+                    "roff" => "application/x-troff", 
+                    "rtf" => "application/rtf", 
+                    "rtx" => "text/richtext", 
+                    "scd" => "application/x-msschedule", 
+                    "sct" => "text/scriptlet", 
+                    "setpay" => "application/set-payment-initiation", 
+                    "setreg" => "application/set-registration-initiation", 
+                    "sh" => "application/x-sh", 
+                    "shar" => "application/x-shar", 
+                    "sit" => "application/x-stuffit", 
+                    "snd" => "audio/basic", 
+                    "spc" => "application/x-pkcs7-certificates", 
+                    "spl" => "application/futuresplash", 
+                    "src" => "application/x-wais-source", 
+                    "sst" => "application/vnd.ms-pkicertstore", 
+                    "stl" => "application/vnd.ms-pkistl", 
+                    "stm" => "text/html", 
+                    "svg" => "image/svg+xml", 
+                    "sv4cpio" => "application/x-sv4cpio", 
+                    "sv4crc" => "application/x-sv4crc", 
+                    "t" => "application/x-troff", 
+                    "tar" => "application/x-tar", 
+                    "tcl" => "application/x-tcl", 
+                    "tex" => "application/x-tex", 
+                    "texi" => "application/x-texinfo", 
+                    "texinfo" => "application/x-texinfo", 
+                    "tgz" => "application/x-compressed", 
+                    "tif" => "image/tiff", 
+                    "tiff" => "image/tiff", 
+                    "tr" => "application/x-troff", 
+                    "trm" => "application/x-msterminal", 
+                    "tsv" => "text/tab-separated-values", 
+                    "txt" => "text/plain", 
+                    "uls" => "text/iuls", 
+                    "ustar" => "application/x-ustar", 
+                    "vcf" => "text/x-vcard", 
+                    "vrml" => "x-world/x-vrml", 
+                    "wav" => "audio/x-wav", 
+                    "wcm" => "application/vnd.ms-works", 
+                    "wdb" => "application/vnd.ms-works", 
+                    "wks" => "application/vnd.ms-works", 
+                    "wmf" => "application/x-msmetafile", 
+                    "wps" => "application/vnd.ms-works", 
+                    "wri" => "application/x-mswrite", 
+                    "wrl" => "x-world/x-vrml", 
+                    "wrz" => "x-world/x-vrml", 
+                    "xaf" => "x-world/x-vrml", 
+                    "xbm" => "image/x-xbitmap", 
+                    "xla" => "application/vnd.ms-excel", 
+                    "xlc" => "application/vnd.ms-excel", 
+                    "xlm" => "application/vnd.ms-excel", 
+                    "xls" => "application/vnd.ms-excel", 
+                    "xlt" => "application/vnd.ms-excel", 
+                    "xlw" => "application/vnd.ms-excel", 
+                    "xof" => "x-world/x-vrml", 
+                    "xpm" => "image/x-xpixmap", 
+                    "xwd" => "image/x-xwindowdump", 
+                    "z" => "application/x-compress", 
+                    "rar" => "application/x-rar-compressed", 
+                    "zip" => "application/zip"); 
+return $mime_types;                     
+} 
+?>
\ No newline at end of file