Php supports resumable download and multipart download. php supports resumable download _ PHP Tutorial

Php supports resumable Upload and multipart download. php supports resumable Upload. Php supports resumable Upload and multipart download. php supports resumable Download. This article will share with you how php supports resumable Upload and multipart download for your reference, the specific content is as follows: php ** php supports resumable data transfer and multipart download. php supports resumable data transfer.

This article is to share with you the php support for resumable data transfer and multipart download classes for your reference. the specific content is as follows:

<? Php/*** User: djunny * Date: 2016-04-29 * Time: * Mail: 199962760@qq.com * supports resumable download class */class downloader {/*** download file to local path ** @ param $ url * @ param $ save_file * @ param int $ speed *@ param array $ headers * @ param int $ timeout * @ return bool * @ throws Exception */static function get ($ url, $ save_file, $ speed = 10240, $ headers = array (), $ timeout = 10) {$ url_info = self: parse _ Url ($ url); if (! $ Url_info ['host']) {throw new Exception ('URL is invalid ');} // default header $ def_headers = array ('access' => '*/*', 'user-agent' => 'mozilla/4.0 (compatible; MSIE 8.0; windows NT 5.1; Trident/4.0) ', 'Accept-Encoding' => 'gzip, deflate', 'host' => $ url_info ['host'], 'connection' => 'close', 'Accept-color' => 'zh-cn',); // merge heade $ headers = array_merge ($ def_headers, $ headers ); // get co Ntent length $ content_length = self: get_content_size ($ url_info ['host'], $ url_info ['port'], $ url_info ['request'], $ headers, $ timeout); // content length not exist if (! $ Content_length) {throw new Exception ('content-Length is Not exists');} // get Exists length $ exists_length = is_file ($ save_file )? Filesize ($ save_file): 0; // get tmp data file $ data_file = $ save_file. '. data'; // get tmp data $ exists_data = is_file ($ data_file )? Json_decode (file_get_contents ($ data_file), 1): array (); // check file is valid if ($ exists_length = $ content_length) {$ exists_data & @ unlink ($ data_file); return true;} // check file is expire if ($ exists_data ['length']! = $ Content_length | $ exists_length> $ content_length) {$ exists_data = array ('length' => $ content_length,);} // write exists data file_put_contents ($ data_file, json_encode ($ exists_data); try {$ download_status = self: download_content ($ url_info ['host'], $ url_info ['port'], $ url_info ['request'], $ save_file, $ content_length, $ exists_length, $ speed, $ headers, $ timeout); if ($ download_status) {@ un Link ($ data_file) ;}} catch (Exception $ e) {throw new Exception ($ e-> getMessage ();} return true ;} /*** parse url ** @ param $ url * @ return bool | mixed */static function parse_url ($ url) {$ url_info = parse_url ($ url); if (! $ Url_info ['host']) {return false;} $ url_info ['port'] = $ url_info ['port']? $ Url_info ['host']: 80; $ url_info ['request'] = $ url_info ['path']. ($ url_info ['query']? '? '. $ Url_info ['query']: ''); return $ url_info ;} /*** download content by chunk ** @ param $ host * @ param $ port * @ param $ url_path * @ param $ headers * @ param $ timeout */static function download_content ($ host, $ port, $ url_path, $ save_file, $ content_length, $ range_start, $ speed, & $ headers, $ timeout) {$ request = self: build_header ('GET ', $ url_path, $ headers, $ range_start); $ fsocket = @ fsockopen ($ h Ost, $ port, $ errno, $ errstr, $ timeout); stream_set_blocking ($ fsocket, TRUE); stream_set_timeout ($ fsocket, $ timeout); fwrite ($ fsocket, $ request); $ status = stream_get_meta_data ($ fsocket); if ($ status ['timed _ out']) {throw new Exception ('socket Connect timeout ');} $ is_header_end = 0; $ total_size = $ range_start; $ file_fp = fopen ($ save_file, 'A + '); while (! Feof ($ fsocket) {if (! $ Is_header_end) {$ line = @ fgets ($ fsocket); if (in_array ($ line, array ("\ n", "\ r \ n "))) {$ is_header_end = 1;} continue;} $ resp = fread ($ fsocket, $ speed); $ read_length = strlen ($ resp ); if ($ resp = false | $ content_length <$ total_size + $ read_length) {fclose ($ fsocket); fclose ($ file_fp ); throw new Exception ('socket I/O Error Or File Was Changed ');} $ total_size + = $ read_length; fputs ($ file_fp, $ Resp); // check file end if ($ content_length = $ total_size) {break;} sleep (1); // for test // break ;} fclose ($ fsocket); fclose ($ file_fp); return true ;} /*** get content length ** @ param $ host * @ param $ port * @ param $ url_path * @ param $ headers * @ param $ timeout * @ return int */static function get_content_size ($ host, $ port, $ url_path, & $ headers, $ timeout) {$ request = self: build_header ('hea D', $ url_path, $ headers); $ fsocket = @ fsockopen ($ host, $ port, $ errno, $ errstr, $ timeout); stream_set_blocking ($ fsocket, TRUE ); stream_set_timeout ($ fsocket, $ timeout); fwrite ($ fsocket, $ request); $ status = stream_get_meta_data ($ fsocket); $ length = 0; if ($ status ['timed _ out']) {return 0;} while (! Feof ($ fsocket) {$ line = @ fgets ($ fsocket); if (in_array ($ line, array ("\ n", "\ r \ n "))) {break;} $ line = strtolower ($ line); // get location if (substr ($ line, 0, 9) = 'Location :') {$ location = trim (substr ($ line, 9); $ url_info = self: parse_url ($ location); if (! $ Url_info ['host']) {return 0;} fclose ($ fsocket); return self: get_content_size ($ url_info ['host'], $ url_info ['port'], $ url_info ['request'], $ headers, $ timeout);} // get content length if (strpos ($ line, 'content-length :')! = False) {list (, $ length) = explode ('content-length: ', $ line); $ length = (int) trim ($ length );}} fclose ($ fsocket); return $ length ;} /*** build header for socket ** @ param $ action * @ param $ url_path * @ param $ headers * @ param int $ range_start * @ return string */static function build_header ($ action, $ url_path, & $ headers, $ range_start =-1) {$ out = $ action. "{$ url_path} HTTP/1.0 \ r \ n"; foreach ($ headers as $ hkey => $ hval) {$ out. = $ hkey. ':'. $ hval. "\ r \ n";} if ($ range_start>-1) {$ out. = "Accept-Ranges: bytes \ r \ n"; $ out. = "Range: bytes = {$ range_start}-\ r \ n";} $ out. = "\ r \ n"; return $ out ;}# use age/* try {if (downloader: get (' http://dzs.aqtxt.com/files/11/23636/201604230358308081.rar ', 'Test.rar') {// todo echo 'download succ';} catch (Exception $ e) {echo 'download failed';} */?>

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This article will share with you how php supports resumable data transfer and multipart download for your reference. the specific content is as follows: php /**...