Codice PHP:
class Backup {
var $arrayFile;
var $fileZip;
function Backup() {
require_once "include_zipfile.php";
$this->arrayFile = array();
$i=0;
if ($handle = opendir("../file_pdf")) {
echo "<p style=\"border:1px solid #ccc;\">[b]Elenco dei file nella cartella "file_pdf":[/b]
";
while (false !== ($file = readdir($handle)) ) {
if ($file != "." && $file != ".." && $file != ".DS_Store") {
echo "[i]".($i+1).":[/i] ".$file."
";
$this->arrayFile[$i] = $file;
$i++;
}
}
echo "</p>";
closedir($handle);
}
}
function getCount() { return count($this->arrayFile); }
function backupFiles() {
$zipfile = new zipfile();
$zipfile->add_dir("../file_pdf/");
$dataOra = new DataOraSQL(getdate());
$dataOraSQL = substr(str_replace(":", "-", str_replace(" ", "_", $dataOra->codificaDataOra())),0,count($dataOra->codificaDataOra())-4);
foreach ($this->arrayFile as $file) {
$fileCompleto = "../file_pdf/".$file;
$outCompleto = "../backup/".$dataOraSQL.".zip";
if (!file_exists ($fileCompleto) || !is_readable ($fileCompleto))
return false;
if ((!file_exists ($outCompleto) && !is_writeable (dirname ($outCompleto)) || (file_exists($outCompleto) && !is_writable($outCompleto)) ))
return false;
$handleFile = fopen($fileCompleto, "rb");
$filedata = fread($handleFile, filesize($fileCompleto));
// $filedata = fopen($fileCompleto, "rb");
$zipfile -> add_file($filedata, "../file_pdf/".$file);
}
$filename = $outCompleto;
$fd = fopen($filename, "wb");
$out = fwrite($fd, $zipfile -> file());
fclose($fd);
$this->fileZip = $dataOraSQL.".zip";
return true;
}
function getFileZip() { return $this->fileZip; }
}
ed anche il codice della class zipfile della pillola in questione:
Codice PHP:
/*
Zip file creation class
makes zip files on the fly...
use the functions add_dir() and add_file() to build the zip file;
see example code below
by Eric Mueller
[url="http://www.themepark.com"][url]http://www.themepark.com[/url][/url]
v1.1 9-20-01
- added comments to example
v1.0 2-5-01
initial version with:
- class appearance
- add_file() and file() methods
- gzcompress() output hacking
by Denis O.Philippov, [email]webmaster@atlant.ru[/email], [url="http://www.atlant.ru"][url]http://www.atlant.ru[/url][/url]
*/
// official ZIP file format: [url="http://www.pkware.com/appnote.txt"][url]http://www.pkware.com/appnote.txt[/url][/url]
class zipfile
{
var $datasec = array(); // array to store compressed data
var $ctrl_dir = array(); // central directory
var $eof_ctrl_dir = "x50x4bx05x06x00x00x00x00"; //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 = "x50x4bx03x04";
$fr .= "x0ax00"; // ver needed to extract
$fr .= "x00x00"; // gen purpose bit flag
$fr .= "x00x00"; // compression method
$fr .= "x00x00x00x00"; // 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 [url="http://support.microsoft.com/support/kb/articles/Q125/0/19.asp"][url]http://support.microsoft.com/suppor...s/Q125/0/19.asp[/url][/url]
// now add to central record
$cdrec = "x50x4bx01x02";
$cdrec .="x00x00"; // version made by
$cdrec .="x0ax00"; // version needed to extract
$cdrec .="x00x00"; // gen purpose bit flag
$cdrec .="x00x00"; // compression method
$cdrec .="x00x00x00x00"; // 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 = "x00x00x10x00";
$ext = "xffxffxffxff";
$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("\", "/", $name); ho dovuto commentarlo perchè interpreta male il "/" e da errore!
//$name = str_replace("", "", $name);
$fr = "x50x4bx03x04";
$fr .= "x14x00"; // ver needed to extract
$fr .= "x00x00"; // gen purpose bit flag
$fr .= "x08x00"; // compression method
$fr .= "x00x00x00x00"; // 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 = "x50x4bx01x02";
$cdrec .="x00x00"; // version made by
$cdrec .="x14x00"; // version needed to extract
$cdrec .="x00x00"; // gen purpose bit flag
$cdrec .="x08x00"; // compression method
$cdrec .="x00x00x00x00"; // 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
";
$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
"x00x00"; // .zip file comment length
}
}
Rispondi quotando