PHP ZIP file download
Here is a code which downloads attachment files from the an imap server. Almost all file types (pdf, doc, xls, etc) are being downloaded correctly, where as some zip files g
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I didn't see anyone mention this yet, but try removing the Content-Length header when download ZIP files. I had this exact same problem and it worked for
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This is really good for big file download. User will be receiving file immediately. Maybe zip will be correct too this way.
if(file_exists($filename) && is_readable($filename) && file_exists($filename)){ header("Content-Disposition: attachment; filename=".basename(str_replace(' ', '_', $filename))); header("Content-Type: application/force-download"); header("Content-Type: application/octet-stream"); header("Content-Type: application/download"); header("Content-Description: File Transfer"); header("Content-Length: " . filesize($filename)); flush(); // this doesn't really matter. $fp = fopen($filename, "r"); while (!feof($fp)) { echo fread($fp, 65536); flush(); // this is essential for large downloads } fclose($fp); exit; }讨论(0) -
Script for downloading files in zip format: zip.php
<?php /** * Zip file creation class. * Makes zip files. * * Last Modification and Extension By : * * Hasin Hayder * HomePage : www.hasinme.info * Email : countdraculla@gmail.com * IDE : PHP Designer 2005 * * * Originally Based on : * * http://www.zend.com/codex.php?id=535&single=1 * By Eric Mueller <eric@themepark.com> * * http://www.zend.com/codex.php?id=470&single=1 * by Denis125 <webmaster@atlant.ru> * * a patch from Peter Listiak <mlady@users.sourceforge.net> for last modified * date and time of the compressed file * * Official ZIP file format: http://www.pkware.com/appnote.txt * * @access public */ class zipfile { /** * Array to store compressed data * * @var array $datasec */ var $datasec = array(); /** * Central directory * * @var array $ctrl_dir */ var $ctrl_dir = array(); /** * End of central directory record * * @var string $eof_ctrl_dir */ var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00"; /** * Last offset position * * @var integer $old_offset */ var $old_offset = 0; /** * Converts an Unix timestamp to a four byte DOS date and time format (date * in high two bytes, time in low two bytes allowing magnitude comparison). * * @param integer the current Unix timestamp * * @return integer the current date in a four byte DOS format * * @access private */ function unix2DosTime($unixtime = 0) { $timearray = ($unixtime == 0) ? getdate() : getdate($unixtime); if ($timearray['year'] < 1980) { $timearray['year'] = 1980; $timearray['mon'] = 1; $timearray['mday'] = 1; $timearray['hours'] = 0; $timearray['minutes'] = 0; $timearray['seconds'] = 0; } // end if return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) | ($timearray['hours'] << 11) | ($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1); } // end of the 'unix2DosTime()' method /** * * Function to force the download of the archive as soon as it is created * * @param archiveName string - name of the created archive file * @access public * @return ZipFile via Header */ public function forceDownload($archiveName) { if(ini_get('zlib.output_compression')) { ini_set('zlib.output_compression', 'Off'); } // Security checks if( $archiveName == "" ) { echo "<html><title>Public Photo Directory - Download </title><body><BR><B>ERROR:</B> The download file was NOT SPECIFIED.</body></html>"; exit; } elseif ( ! file_exists( $archiveName ) ) { echo "<html><title>Public Photo Directory - Download </title><body><BR><B>ERROR:</B> File not found.</body></html>"; exit; } header("Pragma: public"); header("Expires: 0"); header("Cache-Control: must-revalidate, post-check=0, pre-check=0"); header("Cache-Control: private",false); header("Content-Type: application/zip"); header("Content-Disposition: attachment; filename=".basename($archiveName).";" ); header("Content-Transfer-Encoding: binary"); header("Content-Length: ".filesize($archiveName)); readfile("$archiveName"); } /** * Adds "file" to archive * * @param string file contents * @param string name of the file in the archive (may contains the path) * @param integer the current timestamp * * @access public */ function addFile($data, $name, $time = 0) { $name = str_replace('\\', '/', $name); $dtime = dechex($this->unix2DosTime($time)); $hexdtime = '\x' . $dtime[6] . $dtime[7] . '\x' . $dtime[4] . $dtime[5] . '\x' . $dtime[2] . $dtime[3] . '\x' . $dtime[0] . $dtime[1]; eval('$hexdtime = "' . $hexdtime . '";'); $fr = "\x50\x4b\x03\x04"; $fr .= "\x14\x00"; // ver needed to extract $fr .= "\x00\x00"; // gen purpose bit flag $fr .= "\x08\x00"; // compression method $fr .= $hexdtime; // last mod time and date // "local file header" segment $unc_len = strlen($data); $crc = crc32($data); $zdata = gzcompress($data); $zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2); // fix crc bug $c_len = strlen($zdata); $fr .= pack('V', $crc); // crc32 $fr .= pack('V', $c_len); // compressed filesize $fr .= pack('V', $unc_len); // uncompressed filesize $fr .= pack('v', strlen($name)); // length of filename $fr .= pack('v', 0); // extra field length $fr .= $name; // "file data" segment $fr .= $zdata; // "data descriptor" segment (optional but necessary if archive is not // served as file) $fr .= pack('V', $crc); // crc32 $fr .= pack('V', $c_len); // compressed filesize $fr .= pack('V', $unc_len); // uncompressed filesize // add this entry to array $this -> datasec[] = $fr; // now add to central directory record $cdrec = "\x50\x4b\x01\x02"; $cdrec .= "\x00\x00"; // version made by $cdrec .= "\x14\x00"; // version needed to extract $cdrec .= "\x00\x00"; // gen purpose bit flag $cdrec .= "\x08\x00"; // compression method $cdrec .= $hexdtime; // last mod time & date $cdrec .= pack('V', $crc); // crc32 $cdrec .= pack('V', $c_len); // compressed filesize $cdrec .= pack('V', $unc_len); // uncompressed filesize $cdrec .= pack('v', strlen($name) ); // length of filename $cdrec .= pack('v', 0 ); // extra field length $cdrec .= pack('v', 0 ); // file comment length $cdrec .= pack('v', 0 ); // disk number start $cdrec .= pack('v', 0 ); // internal file attributes $cdrec .= pack('V', 32 ); // external file attributes - 'archive' bit set $cdrec .= pack('V', $this -> old_offset ); // relative offset of local header $this -> old_offset += strlen($fr); $cdrec .= $name; // optional extra field, file comment goes here // save to central directory $this -> ctrl_dir[] = $cdrec; } // end of the 'addFile()' method /** * Dumps out file * * @return string the zipped file * * @access public */ function file() { $data = implode('', $this -> datasec); $ctrldir = implode('', $this -> ctrl_dir); return $data . $ctrldir . $this -> eof_ctrl_dir . pack('v', sizeof($this -> ctrl_dir)) . // total # of entries "on this disk" pack('v', sizeof($this -> ctrl_dir)) . // total # of entries overall pack('V', strlen($ctrldir)) . // size of central dir pack('V', strlen($data)) . // offset to start of central dir "\x00\x00"; // .zip file comment length } // end of the 'file()' method /** * A Wrapper of original addFile Function * * Created By Hasin Hayder at 29th Jan, 1:29 AM * * @param array An Array of files with relative/absolute path to be added in Zip File * * @access public */ function addFiles($files /*Only Pass Array*/) { foreach($files as $file) { if (is_file($file)) //directory check { $data = implode("",file($file)); $new_file = $this->prefix_name.end(explode('/', $file)); $this->addFile($data, $new_file); } } } /** * A Wrapper of original file Function * * Created By Hasin Hayder at 29th Jan, 1:29 AM * * @param string Output file name * * @access public */ function output($file) { $fp=fopen($file,"w"); fwrite($fp,$this->file()); fclose($fp); } } // end of the 'zipfile' class ?>Example usage:
<?php include_once('zip.php'); $zip_file = 'my_files.zip'; // name for downloaded zip file $ziper = new zipfile(); $ziper->prefix_name = 'folder/'; // here you create folder which will contain downloaded files $ziper->addFiles($files_to_zip); // array of files $ziper->output($zip_file); $ziper->forceDownload($zip_file); @unlink($zip_file); ?>讨论(0) -
It Worked For Me. It Download My .Zip File. But, you have to provide the full path of File, where it is located. For ex: My File is inside assets/upload Folder. Attach name of that file with this location. You will download it without any problem. $FilePaths='assets/Upload/'.$FileName; //Give proper file path with file name. download_file($FilePaths); function download_file( $fullPath ) { if( headers_sent() ) die('Headers Sent'); if(ini_get('zlib.output_compression')) ini_set('zlib.output_compression', 'Off'); if( file_exists($fullPath) ) { $fsize = filesize($fullPath); $path_parts = pathinfo($fullPath); $ext = strtolower($path_parts["extension"]); switch ($ext) { case "pdf": $ctype="application/pdf"; break; case "exe": $ctype="application/octet-stream"; break; case "zip": $ctype="application/zip"; break; case "doc": $ctype="application/msword"; break; case "xls": $ctype="application/vnd.ms-excel"; break; case "ppt": $ctype="application/vnd.ms-powerpoint"; break; case "gif": $ctype="image/gif"; break; case "png": $ctype="image/png"; break; case "jpeg": case "jpg": $ctype="image/jpg"; break; default: $ctype="application/force-download"; } header("Pragma: public"); header("Expires: 0"); header("Cache-Control: must-revalidate, post-check=0, pre-check=0"); header("Cache-Control: private",false); header("Content-Type: $ctype"); header("Content-Disposition: attachment; filename=\"".basename($fullPath)."\";" ); header("Content-Transfer-Encoding: binary"); header("Content-Length: ".$fsize); ob_clean(); flush(); readfile( $fullPath ); } else die('File Not Found'); }For more info, Check this File Download
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You're very close to the solution! I found the way to solve this was to remove the Content-type header all together and let the browser figure out that this was a .zip file. Remove the Content-Type and it should work as needed.
// Remove this line header('Content-Type: '. $type .'/'. $subtype);In my console (Chrome) I was receiving a strange message(s) saying:
Resource interpreted as Document but transferred with MIME type application/octet-stream:
Resource interpreted as Document but transferred with MIME type application/zip:
When I removed the MIME Type (Content-type header) the .zip stopped giving me an error and worked normally.
The most basic download script for making the .zip to work looked like this at the end: (note: You can still add more headers for caching and such)
<?php header("Content-Disposition: attachment; filename=\"".$Filename."\""); header("Content-Length: ".filesize($Filename)); readfile($Filename); ?>Edited
Your .zip's will also run into problems if the browser is reading extra spaces. You can prevent the extra spaces at the end of the readfile() by adding exit(); but you'll want to make sure you don't have any spaces at the start of the file. This is particularly common when dealing with frameworks (especially your own). A little trick: If you include all the functions, configs and classes before your buffer starts outputting HTML, view your source code. At the start there will be a space before the .
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The culprit was imap_base64. It was not decoding the data correctly. I replaced it with base64_decode as follows and the code worked fine.
$body = base64_encode($data);讨论(0)
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