silentweed Posted February 27, 2007 Share Posted February 27, 2007 Hi guys, Im using the class http://codewalkers.com/seecode/65.html to create zip files on the fly. However i am not sure how to implement this. Do i copy the class zipfile code into a file called zipfile.php and the rest of the code after that into another php file for e.g test.php? Any help appreciated..thanks in advance... heres what i've done.. ive created a file called zipfile.php which contains the class i.e: <?php class zipfile { var $datasec = array(); // array to store compressed data var $ctrl_dir = array(); // central directory var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00"; //end of Central directory record var $old_offset = 0; function add_dir($name) // adds "directory" to archive - do this before putting any files in directory! // $name - name of directory... like this: "path/" // ...then you can add files using add_file with names like "path/file.txt" { $name = str_replace("\\", "/", $name); $fr = "\x50\x4b\x03\x04"; $fr .= "\x0a\x00"; // ver needed to extract $fr .= "\x00\x00"; // gen purpose bit flag $fr .= "\x00\x00"; // compression method $fr .= "\x00\x00\x00\x00"; // last mod time and date $fr .= pack("V",0); // crc32 $fr .= pack("V",0); //compressed filesize $fr .= pack("V",0); //uncompressed filesize $fr .= pack("v", strlen($name) ); //length of pathname $fr .= pack("v", 0 ); //extra field length $fr .= $name; // end of "local file header" segment // no "file data" segment for path // "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; $new_offset = strlen(implode("", $this->datasec)); // ext. file attributes mirrors MS-DOS directory attr byte, detailed // at http://support.microsoft.com/support/kb/articles/Q125/0/19.asp // now add to central record $cdrec = "\x50\x4b\x01\x02"; $cdrec .="\x00\x00"; // version made by $cdrec .="\x0a\x00"; // version needed to extract $cdrec .="\x00\x00"; // gen purpose bit flag $cdrec .="\x00\x00"; // compression method $cdrec .="\x00\x00\x00\x00"; // last mod time & date $cdrec .= pack("V",0); // crc32 $cdrec .= pack("V",0); //compressed filesize $cdrec .= pack("V",0); //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 $ext = "\x00\x00\x10\x00"; $ext = "\xff\xff\xff\xff"; $cdrec .= pack("V", 16 ); //external file attributes - 'directory' bit set $cdrec .= pack("V", $this -> old_offset ); //relative offset of local header $this -> old_offset = $new_offset; $cdrec .= $name; // optional extra field, file comment goes here // save to array $this -> ctrl_dir[] = $cdrec; } function add_file($data, $name) // adds "file" to archive // $data - file contents // $name - name of file in archive. Add path if your want { $name = str_replace("\\", "/", $name); //$name = str_replace("\\", "\\\\", $name); $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 .= "\x00\x00\x00\x00"; // last mod time and date $unc_len = strlen($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; // end of "local file header" segment // "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; $new_offset = strlen(implode("", $this->datasec)); // 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 .="\x00\x00\x00\x00"; // 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", $this -> old_offset ); //relative offset of local header // echo "old offset is ".$this->old_offset.", new offset is $new_offset<br>"; $this -> old_offset = $new_offset; $cdrec .= $name; // optional extra field, file comment goes here // save to central directory $this -> ctrl_dir[] = $cdrec; } function file() { // dump out 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 } } ?> and in test.php ive got the code: <?php $zipfile = new zipfile(); // add the subdirectory ... important! $zipfile -> add_dir("dir/"); // add the binary data stored in the string 'filedata' $filedata = "(read your file into $filedata)"; $zipfile -> add_file($filedata, "dir/file.txt"); // the next three lines force an immediate download of the zip file: header("Content-type: application/octet-stream"); header("Content-disposition: attachment; filename=test.zip"); echo $zipfile -> file(); // OR instead of doing that, you can write out the file to the loca disk like this: $filename = "output.zip"; $fd = fopen ($filename, "wb"); $out = fwrite ($fd, $zipfile -> file()); fclose ($fd); // then offer it to the user to download: <a href="output.zip">Click here to download the new zip file.</a> ?> However when i run test.php i get the error: Fatal error: Class 'zipfile' not found in c:\htdocs\zipper\test.php on line 4 Link to comment https://forums.phpfreaks.com/topic/40413-code-class-to-create-zip-files-on-the-fly/ Share on other sites More sharing options...
mojito Posted March 16, 2007 Share Posted March 16, 2007 I think you have to include the file zip.php for it to be available. Im going to test your script as im doing something similar. Yes it works add this to any script you need to access this class. require("zip.php"); Link to comment https://forums.phpfreaks.com/topic/40413-code-class-to-create-zip-files-on-the-fly/#findComment-208769 Share on other sites More sharing options...
monk.e.boy Posted March 16, 2007 Share Posted March 16, 2007 if you are linux you could write the data to a file, then call system('gzip -c file > foo.gz') to gzip the file up. monk.e.boy Link to comment https://forums.phpfreaks.com/topic/40413-code-class-to-create-zip-files-on-the-fly/#findComment-208783 Share on other sites More sharing options...
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