code example for PHP to implement packaged download files

This article mainly introduces the PHP implementation of the package download file method, involving PHP based on Curl file acquisition, traversal, zip compression and download and other related operations skills, the need for friends can refer to the following

This article describes the PHP implementation of the package download file method. Share to everyone for your reference, as follows:

/*** Download File * @param $img * @return string*/public function Download ($img) {$items = [];    $names = [];      if ($img) {//For front-end jump zip link stitching $path _redirect = '/zip/'. Date (' Ymd ');      Temporary file storage Address $path = '/tmp '. $path _redirect;      if (!is_dir ($path)) {mkdir ($path, 0777,true);        } foreach ($img as $key = + $value) {$fileContent = ';        $fileContent = $this->curldownload ($value [' url ']);          if ($fileContent) {$__tmp = $this->savefile ($value [' url '], $path, $fileContent);          $items [] = $__tmp[0]; $names [] = $value [' name ']. ' _'. ($key + 1). '. '.        $__TMP[1];        }} if ($items) {$zip = new ziparchive (); $filename = Time (). '        Download.zip '; $zipname = $path. '        /'. $filename; if (!file_exists ($zipname)) {$res = $zip->open ($zipname, Ziparchive::create |          Ziparchive::overwrite);          if ($res) {foreach ($items as $k = = $v) {    $value = Explode ("/", $v);              $end = End ($value);              $zip->addfile ($v, $end);            $zip->renamename ($end, $names [$k]);          } $zip->close ();          } else {return '; }//through the front-end JS jump zip address download, let not use PHP code download ZIP file//if (file_exists ($zipname)) {//Splicing attachment address//$re Direct = domain name. $path _redirect. '            /'. $filename;            return $redirect;          Header ("Location:". $redirect);            }//write the file directly to the client if (file_exists ($zipname)) {header ("cache-control:public");            Header ("Content-description:file Transfer"); Header (' Content-disposition:attachment; filename= attachment. zip '); FileName header ("Content-type:application/zip"); Header in zip format ("content-transfer-encoding:binary"); Tell the browser that this is the header of the binary file (' content-length: '. FileSize ($zipname));          Tell the browser that the file size @readfile ($zipname);         } Delete temporary file @unlink ($zipname);    }} "return";    }}/*** Curl Gets the link content * @param $url * @return mixed|string*/public function curldownload ($url) {$ch = Curl_init ($url);    curl_setopt ($ch, Curlopt_ipresolve, CURL_IPRESOLVE_V4);    curl_setopt ($ch, Curlopt_returntransfer, 1);    curl_setopt ($ch, Curlopt_header, 0);    curl_setopt ($ch, Curlopt_connecttimeout, 20);    curl_setopt ($ch, Curlopt_ssl_verifypeer, false);    curl_setopt ($ch, Curlopt_ssl_verifyhost, false);    $errno = Curl_errno ($ch);    $error = Curl_error ($ch);    $res =curl_exec ($ch);    Curl_close ($ch);    if ($errno >0) {return '; } return $res;}    /*** Save temporary file * @param $url * @param $dir * @param $content * @return array*/public function SaveFile ($url, $dir, $content) { $fname = basename ($url); Returns the file name portion of the path $str _name = PathInfo ($fname); Returns the file path information as an array $extname = Strtolower ($str _name[' extension ');    Change the extension to lowercase $path = $dir. '/'. MD5 ($url). $extname; $fp = fopen ($patH, ' w+ ');    Fwrite ($fp, $content);    Fclose ($FP); Return Array ($path, $extname);}

Reference:

$img = [[' url ' = = ' address url/1.jpg ', ' name ' = ' = ' name ']];D ownload ($img);