Heb een schitterende class om on-the-fly zipjes mee te maken van het net geplukt. Hij werkt prachtig maar helaas niet op PHP4 (wel op PHP5). Heeft iemand een idee wat ik er aan moet veranderen om hem ook op PHP4 werkend te krijgen?
code:
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| <?php
/**
* Class to dynamically create a zip file (archive)
*
* @author Rochak Chauhan
*/
class createZip {
public $compressedData = array();
public $centralDirectory = array(); // central directory
public $endOfCentralDirectory = "\x50\x4b\x05\x06\x00\x00\x00\x00"; //end of Central directory record
public $oldOffset = 0;
/**
* Function to create the directory where the file(s) will be unzipped
*
* @param $directoryName string
*
*/
public function addDirectory($directoryName) {
$directoryName = str_replace("\\", "/", $directoryName);
$feedArrayRow = "\x50\x4b\x03\x04";
$feedArrayRow .= "\x0a\x00";
$feedArrayRow .= "\x00\x00";
$feedArrayRow .= "\x00\x00";
$feedArrayRow .= "\x00\x00\x00\x00";
$feedArrayRow .= pack("V",0);
$feedArrayRow .= pack("V",0);
$feedArrayRow .= pack("V",0);
$feedArrayRow .= pack("v", strlen($directoryName) );
$feedArrayRow .= pack("v", 0 );
$feedArrayRow .= $directoryName;
$feedArrayRow .= pack("V",0);
$feedArrayRow .= pack("V",0);
$feedArrayRow .= pack("V",0);
$this -> compressedData[] = $feedArrayRow;
$newOffset = strlen(implode("", $this->compressedData));
$addCentralRecord = "\x50\x4b\x01\x02";
$addCentralRecord .="\x00\x00";
$addCentralRecord .="\x0a\x00";
$addCentralRecord .="\x00\x00";
$addCentralRecord .="\x00\x00";
$addCentralRecord .="\x00\x00\x00\x00";
$addCentralRecord .= pack("V",0);
$addCentralRecord .= pack("V",0);
$addCentralRecord .= pack("V",0);
$addCentralRecord .= pack("v", strlen($directoryName) );
$addCentralRecord .= pack("v", 0 );
$addCentralRecord .= pack("v", 0 );
$addCentralRecord .= pack("v", 0 );
$addCentralRecord .= pack("v", 0 );
$ext = "\x00\x00\x10\x00";
$ext = "\xff\xff\xff\xff";
$addCentralRecord .= pack("V", 16 );
$addCentralRecord .= pack("V", $this -> oldOffset );
$this -> oldOffset = $newOffset;
$addCentralRecord .= $directoryName;
$this -> centralDirectory[] = $addCentralRecord;
}
/**
* Function to add file(s) to the specified directory in the archive
*
* @param $directoryName string
*
*/
public function addFile($data, $directoryName) {
$directoryName = str_replace("\\", "/", $directoryName);
$feedArrayRow = "\x50\x4b\x03\x04";
$feedArrayRow .= "\x14\x00";
$feedArrayRow .= "\x00\x00";
$feedArrayRow .= "\x08\x00";
$feedArrayRow .= "\x00\x00\x00\x00";
$uncompressedLength = strlen($data);
$compression = crc32($data);
$gzCompressedData = gzcompress($data, 9);
$gzCompressedData = substr( substr($gzCompressedData, 0, strlen($gzCompressedData) - 4), 2);
$compressedLength = strlen($gzCompressedData);
$feedArrayRow .= pack("V",$compression);
$feedArrayRow .= pack("V",$compressedLength);
$feedArrayRow .= pack("V",$uncompressedLength);
$feedArrayRow .= pack("v", strlen($directoryName) );
$feedArrayRow .= pack("v", 0 );
$feedArrayRow .= $directoryName;
$feedArrayRow .= $gzCompressedData;
$feedArrayRow .= pack("V",$compression);
$feedArrayRow .= pack("V",$compressedLength);
$feedArrayRow .= pack("V",$uncompressedLength);
$this -> compressedData[] = $feedArrayRow;
$newOffset = strlen(implode("", $this->compressedData));
$addCentralRecord = "\x50\x4b\x01\x02";
$addCentralRecord .="\x00\x00";
$addCentralRecord .="\x14\x00";
$addCentralRecord .="\x00\x00";
$addCentralRecord .="\x08\x00";
$addCentralRecord .="\x00\x00\x00\x00";
$addCentralRecord .= pack("V",$compression);
$addCentralRecord .= pack("V",$compressedLength);
$addCentralRecord .= pack("V",$uncompressedLength);
$addCentralRecord .= pack("v", strlen($directoryName) );
$addCentralRecord .= pack("v", 0 );
$addCentralRecord .= pack("v", 0 );
$addCentralRecord .= pack("v", 0 );
$addCentralRecord .= pack("v", 0 );
$addCentralRecord .= pack("V", 32 );
$addCentralRecord .= pack("V", $this -> oldOffset );
$this -> oldOffset = $newOffset;
$addCentralRecord .= $directoryName;
$this -> centralDirectory[] = $addCentralRecord;
}
/**
* Fucntion to return the zip file
*
* @return zipfile (archive)
*/
public function getZippedfile() {
$data = implode("", $this -> compressedData);
$controlDirectory = implode("", $this -> centralDirectory);
return
$data.
$controlDirectory.
$this -> endOfCentralDirectory.
pack("v", sizeof($this -> centralDirectory)).
pack("v", sizeof($this -> centralDirectory)).
pack("V", strlen($controlDirectory)).
pack("V", strlen($data)).
"\x00\x00";
}
/**
*
* Function to force the download of the archive as soon as it is created
*
* @param archiveName string - name of the created archive file
*/
public function forceDownload($archiveName) {
$headerInfo = '';
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");
}
}
?> |
Bovendien is er genoeg te vinden over de verschillen tussen php4 & 5.
/u/107051/jeroenmadtrix60.png?f=community)
Dit topic is gesloten.