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    <p>Script for downloading files in zip format: <strong>zip.php</strong></p> <pre><code>&lt;?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&amp;single=1 * By Eric Mueller &lt;eric@themepark.com&gt; * * http://www.zend.com/codex.php?id=470&amp;single=1 * by Denis125 &lt;webmaster@atlant.ru&gt; * * a patch from Peter Listiak &lt;mlady@users.sourceforge.net&gt; 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'] &lt; 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) &lt;&lt; 25) | ($timearray['mon'] &lt;&lt; 21) | ($timearray['mday'] &lt;&lt; 16) | ($timearray['hours'] &lt;&lt; 11) | ($timearray['minutes'] &lt;&lt; 5) | ($timearray['seconds'] &gt;&gt; 1); } // end of the 'unix2DosTime()' method /** * * Function to force the download of the archive as soon as it is created * * @param archiveName string - name of the created archive file * @access public * @return ZipFile via Header */ public function forceDownload($archiveName) { if(ini_get('zlib.output_compression')) { ini_set('zlib.output_compression', 'Off'); } // Security checks if( $archiveName == "" ) { echo "&lt;html&gt;&lt;title&gt;Public Photo Directory - Download &lt;/title&gt;&lt;body&gt;&lt;BR&gt;&lt;B&gt;ERROR:&lt;/B&gt; The download file was NOT SPECIFIED.&lt;/body&gt;&lt;/html&gt;"; exit; } elseif ( ! file_exists( $archiveName ) ) { echo "&lt;html&gt;&lt;title&gt;Public Photo Directory - Download &lt;/title&gt;&lt;body&gt;&lt;BR&gt;&lt;B&gt;ERROR:&lt;/B&gt; File not found.&lt;/body&gt;&lt;/html&gt;"; exit; } header("Pragma: public"); header("Expires: 0"); header("Cache-Control: must-revalidate, post-check=0, pre-check=0"); header("Cache-Control: private",false); header("Content-Type: application/zip"); header("Content-Disposition: attachment; filename=".basename($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-&gt;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 -&gt; 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 &amp; 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 -&gt; old_offset ); // relative offset of local header $this -&gt; old_offset += strlen($fr); $cdrec .= $name; // optional extra field, file comment goes here // save to central directory $this -&gt; ctrl_dir[] = $cdrec; } // end of the 'addFile()' method /** * Dumps out file * * @return string the zipped file * * @access public */ function file() { $data = implode('', $this -&gt; datasec); $ctrldir = implode('', $this -&gt; ctrl_dir); return $data . $ctrldir . $this -&gt; eof_ctrl_dir . pack('v', sizeof($this -&gt; ctrl_dir)) . // total # of entries "on this disk" pack('v', sizeof($this -&gt; ctrl_dir)) . // total # of entries overall pack('V', strlen($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-&gt;prefix_name.end(explode('/', $file)); $this-&gt;addFile($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-&gt;file()); fclose($fp); } } // end of the 'zipfile' class ?&gt; </code></pre> <p><strong>Example usage:</strong></p> <pre><code>&lt;?php include_once('zip.php'); $zip_file = 'my_files.zip'; // name for downloaded zip file $ziper = new zipfile(); $ziper-&gt;prefix_name = 'folder/'; // here you create folder which will contain downloaded files $ziper-&gt;addFiles($files_to_zip); // array of files $ziper-&gt;output($zip_file); $ziper-&gt;forceDownload($zip_file); @unlink($zip_file); ?&gt; </code></pre>
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    1. COI think you misunderstood the question. I do not want to download multiple files as a zip file, rather I have a zip file on a server which needs to be downloaded. So the forceDownload function in your file is same as my code above.
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    2. COJust remove the 'forceDownload' call.
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