527 lines
17 KiB
PHP
527 lines
17 KiB
PHP
|
<?php
|
||
|
|
/* vim: set expandtab tabstop=4 shiftwidth=4: */
|
||
|
|
// +----------------------------------------------------------------------+
|
||
|
|
// | PHP Version 4 |
|
||
|
|
// +----------------------------------------------------------------------+
|
||
|
|
// | Copyright (c) 1997-2002 The PHP Group |
|
||
|
|
// +----------------------------------------------------------------------+
|
||
|
|
// | This source file is subject to version 2.02 of the PHP license, |
|
||
|
|
// | that is bundled with this package in the file LICENSE, and is |
|
||
|
|
// | available at through the world-wide-web at |
|
||
|
|
// | http://www.php.net/license/2_02.txt. |
|
||
|
|
// | If you did not receive a copy of the PHP license and are unable to |
|
||
|
|
// | obtain it through the world-wide-web, please send a note to |
|
||
|
|
// | license@php.net so we can mail you a copy immediately. |
|
||
|
|
// +----------------------------------------------------------------------+
|
||
|
|
// | Author: Xavier Noguer <xnoguer@php.net> |
|
||
|
|
// | Based on OLE::Storage_Lite by Kawai, Takanori |
|
||
|
|
// +----------------------------------------------------------------------+
|
||
|
|
//
|
||
|
|
// $Id: OLE.php,v 1.13 2007/03/07 14:38:25 schmidt Exp $
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Array for storing OLE instances that are accessed from
|
||
|
|
* OLE_ChainedBlockStream::stream_open().
|
||
|
|
* @var array
|
||
|
|
*/
|
||
|
|
$GLOBALS['_OLE_INSTANCES'] = array();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* OLE package base class.
|
||
|
|
*
|
||
|
|
* @author Xavier Noguer <xnoguer@php.net>
|
||
|
|
* @author Christian Schmidt <schmidt@php.net>
|
||
|
|
* @category PHPExcel
|
||
|
|
* @package PHPExcel_Shared_OLE
|
||
|
|
*/
|
||
|
|
class PHPExcel_Shared_OLE
|
||
|
|
{
|
||
|
|
const OLE_PPS_TYPE_ROOT = 5;
|
||
|
|
const OLE_PPS_TYPE_DIR = 1;
|
||
|
|
const OLE_PPS_TYPE_FILE = 2;
|
||
|
|
const OLE_DATA_SIZE_SMALL = 0x1000;
|
||
|
|
const OLE_LONG_INT_SIZE = 4;
|
||
|
|
const OLE_PPS_SIZE = 0x80;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The file handle for reading an OLE container
|
||
|
|
* @var resource
|
||
|
|
*/
|
||
|
|
public $_file_handle;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Array of PPS's found on the OLE container
|
||
|
|
* @var array
|
||
|
|
*/
|
||
|
|
public $_list = array();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Root directory of OLE container
|
||
|
|
* @var OLE_PPS_Root
|
||
|
|
*/
|
||
|
|
public $root;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Big Block Allocation Table
|
||
|
|
* @var array (blockId => nextBlockId)
|
||
|
|
*/
|
||
|
|
public $bbat;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Short Block Allocation Table
|
||
|
|
* @var array (blockId => nextBlockId)
|
||
|
|
*/
|
||
|
|
public $sbat;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Size of big blocks. This is usually 512.
|
||
|
|
* @var int number of octets per block.
|
||
|
|
*/
|
||
|
|
public $bigBlockSize;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Size of small blocks. This is usually 64.
|
||
|
|
* @var int number of octets per block
|
||
|
|
*/
|
||
|
|
public $smallBlockSize;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Reads an OLE container from the contents of the file given.
|
||
|
|
*
|
||
|
|
* @acces public
|
||
|
|
* @param string $file
|
||
|
|
* @return mixed true on success, PEAR_Error on failure
|
||
|
|
*/
|
||
|
|
public function read($file)
|
||
|
|
{
|
||
|
|
$fh = fopen($file, "r");
|
||
|
|
if (!$fh) {
|
||
|
|
throw new PHPExcel_Reader_Exception("Can't open file $file");
|
||
|
|
}
|
||
|
|
$this->_file_handle = $fh;
|
||
|
|
|
||
|
|
$signature = fread($fh, 8);
|
||
|
|
if ("\xD0\xCF\x11\xE0\xA1\xB1\x1A\xE1" != $signature) {
|
||
|
|
throw new PHPExcel_Reader_Exception("File doesn't seem to be an OLE container.");
|
||
|
|
}
|
||
|
|
fseek($fh, 28);
|
||
|
|
if (fread($fh, 2) != "\xFE\xFF") {
|
||
|
|
// This shouldn't be a problem in practice
|
||
|
|
throw new PHPExcel_Reader_Exception("Only Little-Endian encoding is supported.");
|
||
|
|
}
|
||
|
|
// Size of blocks and short blocks in bytes
|
||
|
|
$this->bigBlockSize = pow(2, self::_readInt2($fh));
|
||
|
|
$this->smallBlockSize = pow(2, self::_readInt2($fh));
|
||
|
|
|
||
|
|
// Skip UID, revision number and version number
|
||
|
|
fseek($fh, 44);
|
||
|
|
// Number of blocks in Big Block Allocation Table
|
||
|
|
$bbatBlockCount = self::_readInt4($fh);
|
||
|
|
|
||
|
|
// Root chain 1st block
|
||
|
|
$directoryFirstBlockId = self::_readInt4($fh);
|
||
|
|
|
||
|
|
// Skip unused bytes
|
||
|
|
fseek($fh, 56);
|
||
|
|
// Streams shorter than this are stored using small blocks
|
||
|
|
$this->bigBlockThreshold = self::_readInt4($fh);
|
||
|
|
// Block id of first sector in Short Block Allocation Table
|
||
|
|
$sbatFirstBlockId = self::_readInt4($fh);
|
||
|
|
// Number of blocks in Short Block Allocation Table
|
||
|
|
$sbbatBlockCount = self::_readInt4($fh);
|
||
|
|
// Block id of first sector in Master Block Allocation Table
|
||
|
|
$mbatFirstBlockId = self::_readInt4($fh);
|
||
|
|
// Number of blocks in Master Block Allocation Table
|
||
|
|
$mbbatBlockCount = self::_readInt4($fh);
|
||
|
|
$this->bbat = array();
|
||
|
|
|
||
|
|
// Remaining 4 * 109 bytes of current block is beginning of Master
|
||
|
|
// Block Allocation Table
|
||
|
|
$mbatBlocks = array();
|
||
|
|
for ($i = 0; $i < 109; ++$i) {
|
||
|
|
$mbatBlocks[] = self::_readInt4($fh);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Read rest of Master Block Allocation Table (if any is left)
|
||
|
|
$pos = $this->_getBlockOffset($mbatFirstBlockId);
|
||
|
|
for ($i = 0; $i < $mbbatBlockCount; ++$i) {
|
||
|
|
fseek($fh, $pos);
|
||
|
|
for ($j = 0; $j < $this->bigBlockSize / 4 - 1; ++$j) {
|
||
|
|
$mbatBlocks[] = self::_readInt4($fh);
|
||
|
|
}
|
||
|
|
// Last block id in each block points to next block
|
||
|
|
$pos = $this->_getBlockOffset(self::_readInt4($fh));
|
||
|
|
}
|
||
|
|
|
||
|
|
// Read Big Block Allocation Table according to chain specified by
|
||
|
|
// $mbatBlocks
|
||
|
|
for ($i = 0; $i < $bbatBlockCount; ++$i) {
|
||
|
|
$pos = $this->_getBlockOffset($mbatBlocks[$i]);
|
||
|
|
fseek($fh, $pos);
|
||
|
|
for ($j = 0; $j < $this->bigBlockSize / 4; ++$j) {
|
||
|
|
$this->bbat[] = self::_readInt4($fh);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Read short block allocation table (SBAT)
|
||
|
|
$this->sbat = array();
|
||
|
|
$shortBlockCount = $sbbatBlockCount * $this->bigBlockSize / 4;
|
||
|
|
$sbatFh = $this->getStream($sbatFirstBlockId);
|
||
|
|
for ($blockId = 0; $blockId < $shortBlockCount; ++$blockId) {
|
||
|
|
$this->sbat[$blockId] = self::_readInt4($sbatFh);
|
||
|
|
}
|
||
|
|
fclose($sbatFh);
|
||
|
|
|
||
|
|
$this->_readPpsWks($directoryFirstBlockId);
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param int block id
|
||
|
|
* @param int byte offset from beginning of file
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
public function _getBlockOffset($blockId)
|
||
|
|
{
|
||
|
|
return 512 + $blockId * $this->bigBlockSize;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns a stream for use with fread() etc. External callers should
|
||
|
|
* use PHPExcel_Shared_OLE_PPS_File::getStream().
|
||
|
|
* @param int|PPS block id or PPS
|
||
|
|
* @return resource read-only stream
|
||
|
|
*/
|
||
|
|
public function getStream($blockIdOrPps)
|
||
|
|
{
|
||
|
|
static $isRegistered = false;
|
||
|
|
if (!$isRegistered) {
|
||
|
|
stream_wrapper_register('ole-chainedblockstream', 'PHPExcel_Shared_OLE_ChainedBlockStream');
|
||
|
|
$isRegistered = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Store current instance in global array, so that it can be accessed
|
||
|
|
// in OLE_ChainedBlockStream::stream_open().
|
||
|
|
// Object is removed from self::$instances in OLE_Stream::close().
|
||
|
|
$GLOBALS['_OLE_INSTANCES'][] = $this;
|
||
|
|
$instanceId = end(array_keys($GLOBALS['_OLE_INSTANCES']));
|
||
|
|
|
||
|
|
$path = 'ole-chainedblockstream://oleInstanceId=' . $instanceId;
|
||
|
|
if ($blockIdOrPps instanceof PHPExcel_Shared_OLE_PPS) {
|
||
|
|
$path .= '&blockId=' . $blockIdOrPps->_StartBlock;
|
||
|
|
$path .= '&size=' . $blockIdOrPps->Size;
|
||
|
|
} else {
|
||
|
|
$path .= '&blockId=' . $blockIdOrPps;
|
||
|
|
}
|
||
|
|
return fopen($path, 'r');
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Reads a signed char.
|
||
|
|
* @param resource file handle
|
||
|
|
* @return int
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
private static function _readInt1($fh)
|
||
|
|
{
|
||
|
|
list(, $tmp) = unpack("c", fread($fh, 1));
|
||
|
|
return $tmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Reads an unsigned short (2 octets).
|
||
|
|
* @param resource file handle
|
||
|
|
* @return int
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
private static function _readInt2($fh)
|
||
|
|
{
|
||
|
|
list(, $tmp) = unpack("v", fread($fh, 2));
|
||
|
|
return $tmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Reads an unsigned long (4 octets).
|
||
|
|
* @param resource file handle
|
||
|
|
* @return int
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
private static function _readInt4($fh)
|
||
|
|
{
|
||
|
|
list(, $tmp) = unpack("V", fread($fh, 4));
|
||
|
|
return $tmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets information about all PPS's on the OLE container from the PPS WK's
|
||
|
|
* creates an OLE_PPS object for each one.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
* @param integer the block id of the first block
|
||
|
|
* @return mixed true on success, PEAR_Error on failure
|
||
|
|
*/
|
||
|
|
public function _readPpsWks($blockId)
|
||
|
|
{
|
||
|
|
$fh = $this->getStream($blockId);
|
||
|
|
for ($pos = 0;; $pos += 128) {
|
||
|
|
fseek($fh, $pos, SEEK_SET);
|
||
|
|
$nameUtf16 = fread($fh, 64);
|
||
|
|
$nameLength = self::_readInt2($fh);
|
||
|
|
$nameUtf16 = substr($nameUtf16, 0, $nameLength - 2);
|
||
|
|
// Simple conversion from UTF-16LE to ISO-8859-1
|
||
|
|
$name = str_replace("\x00", "", $nameUtf16);
|
||
|
|
$type = self::_readInt1($fh);
|
||
|
|
switch ($type) {
|
||
|
|
case self::OLE_PPS_TYPE_ROOT:
|
||
|
|
$pps = new PHPExcel_Shared_OLE_PPS_Root(null, null, array());
|
||
|
|
$this->root = $pps;
|
||
|
|
break;
|
||
|
|
case self::OLE_PPS_TYPE_DIR:
|
||
|
|
$pps = new PHPExcel_Shared_OLE_PPS(null, null, null, null, null, null, null, null, null, array());
|
||
|
|
break;
|
||
|
|
case self::OLE_PPS_TYPE_FILE:
|
||
|
|
$pps = new PHPExcel_Shared_OLE_PPS_File($name);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
fseek($fh, 1, SEEK_CUR);
|
||
|
|
$pps->Type = $type;
|
||
|
|
$pps->Name = $name;
|
||
|
|
$pps->PrevPps = self::_readInt4($fh);
|
||
|
|
$pps->NextPps = self::_readInt4($fh);
|
||
|
|
$pps->DirPps = self::_readInt4($fh);
|
||
|
|
fseek($fh, 20, SEEK_CUR);
|
||
|
|
$pps->Time1st = self::OLE2LocalDate(fread($fh, 8));
|
||
|
|
$pps->Time2nd = self::OLE2LocalDate(fread($fh, 8));
|
||
|
|
$pps->_StartBlock = self::_readInt4($fh);
|
||
|
|
$pps->Size = self::_readInt4($fh);
|
||
|
|
$pps->No = count($this->_list);
|
||
|
|
$this->_list[] = $pps;
|
||
|
|
|
||
|
|
// check if the PPS tree (starting from root) is complete
|
||
|
|
if (isset($this->root) && $this->_ppsTreeComplete($this->root->No)) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
fclose($fh);
|
||
|
|
|
||
|
|
// Initialize $pps->children on directories
|
||
|
|
foreach ($this->_list as $pps) {
|
||
|
|
if ($pps->Type == self::OLE_PPS_TYPE_DIR || $pps->Type == self::OLE_PPS_TYPE_ROOT) {
|
||
|
|
$nos = array($pps->DirPps);
|
||
|
|
$pps->children = array();
|
||
|
|
while ($nos) {
|
||
|
|
$no = array_pop($nos);
|
||
|
|
if ($no != -1) {
|
||
|
|
$childPps = $this->_list[$no];
|
||
|
|
$nos[] = $childPps->PrevPps;
|
||
|
|
$nos[] = $childPps->NextPps;
|
||
|
|
$pps->children[] = $childPps;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* It checks whether the PPS tree is complete (all PPS's read)
|
||
|
|
* starting with the given PPS (not necessarily root)
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
* @param integer $index The index of the PPS from which we are checking
|
||
|
|
* @return boolean Whether the PPS tree for the given PPS is complete
|
||
|
|
*/
|
||
|
|
public function _ppsTreeComplete($index)
|
||
|
|
{
|
||
|
|
return isset($this->_list[$index]) &&
|
||
|
|
($pps = $this->_list[$index]) &&
|
||
|
|
($pps->PrevPps == -1 ||
|
||
|
|
$this->_ppsTreeComplete($pps->PrevPps)) &&
|
||
|
|
($pps->NextPps == -1 ||
|
||
|
|
$this->_ppsTreeComplete($pps->NextPps)) &&
|
||
|
|
($pps->DirPps == -1 ||
|
||
|
|
$this->_ppsTreeComplete($pps->DirPps));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Checks whether a PPS is a File PPS or not.
|
||
|
|
* If there is no PPS for the index given, it will return false.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
* @param integer $index The index for the PPS
|
||
|
|
* @return bool true if it's a File PPS, false otherwise
|
||
|
|
*/
|
||
|
|
public function isFile($index)
|
||
|
|
{
|
||
|
|
if (isset($this->_list[$index])) {
|
||
|
|
return ($this->_list[$index]->Type == self::OLE_PPS_TYPE_FILE);
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Checks whether a PPS is a Root PPS or not.
|
||
|
|
* If there is no PPS for the index given, it will return false.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
* @param integer $index The index for the PPS.
|
||
|
|
* @return bool true if it's a Root PPS, false otherwise
|
||
|
|
*/
|
||
|
|
public function isRoot($index)
|
||
|
|
{
|
||
|
|
if (isset($this->_list[$index])) {
|
||
|
|
return ($this->_list[$index]->Type == self::OLE_PPS_TYPE_ROOT);
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gives the total number of PPS's found in the OLE container.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
* @return integer The total number of PPS's found in the OLE container
|
||
|
|
*/
|
||
|
|
public function ppsTotal()
|
||
|
|
{
|
||
|
|
return count($this->_list);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets data from a PPS
|
||
|
|
* If there is no PPS for the index given, it will return an empty string.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
* @param integer $index The index for the PPS
|
||
|
|
* @param integer $position The position from which to start reading
|
||
|
|
* (relative to the PPS)
|
||
|
|
* @param integer $length The amount of bytes to read (at most)
|
||
|
|
* @return string The binary string containing the data requested
|
||
|
|
* @see OLE_PPS_File::getStream()
|
||
|
|
*/
|
||
|
|
public function getData($index, $position, $length)
|
||
|
|
{
|
||
|
|
// if position is not valid return empty string
|
||
|
|
if (!isset($this->_list[$index]) || ($position >= $this->_list[$index]->Size) || ($position < 0)) {
|
||
|
|
return '';
|
||
|
|
}
|
||
|
|
$fh = $this->getStream($this->_list[$index]);
|
||
|
|
$data = stream_get_contents($fh, $length, $position);
|
||
|
|
fclose($fh);
|
||
|
|
return $data;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets the data length from a PPS
|
||
|
|
* If there is no PPS for the index given, it will return 0.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
* @param integer $index The index for the PPS
|
||
|
|
* @return integer The amount of bytes in data the PPS has
|
||
|
|
*/
|
||
|
|
public function getDataLength($index)
|
||
|
|
{
|
||
|
|
if (isset($this->_list[$index])) {
|
||
|
|
return $this->_list[$index]->Size;
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Utility function to transform ASCII text to Unicode
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
* @static
|
||
|
|
* @param string $ascii The ASCII string to transform
|
||
|
|
* @return string The string in Unicode
|
||
|
|
*/
|
||
|
|
public static function Asc2Ucs($ascii)
|
||
|
|
{
|
||
|
|
$rawname = '';
|
||
|
|
for ($i = 0; $i < strlen($ascii); ++$i) {
|
||
|
|
$rawname .= $ascii{$i} . "\x00";
|
||
|
|
}
|
||
|
|
return $rawname;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Utility function
|
||
|
|
* Returns a string for the OLE container with the date given
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
* @static
|
||
|
|
* @param integer $date A timestamp
|
||
|
|
* @return string The string for the OLE container
|
||
|
|
*/
|
||
|
|
public static function LocalDate2OLE($date = null)
|
||
|
|
{
|
||
|
|
if (!isset($date)) {
|
||
|
|
return "\x00\x00\x00\x00\x00\x00\x00\x00";
|
||
|
|
}
|
||
|
|
|
||
|
|
// factor used for separating numbers into 4 bytes parts
|
||
|
|
$factor = pow(2, 32);
|
||
|
|
|
||
|
|
// days from 1-1-1601 until the beggining of UNIX era
|
||
|
|
$days = 134774;
|
||
|
|
// calculate seconds
|
||
|
|
$big_date = $days*24*3600 + gmmktime(date("H", $date), date("i", $date), date("s", $date), date("m", $date), date("d", $date), date("Y", $date));
|
||
|
|
// multiply just to make MS happy
|
||
|
|
$big_date *= 10000000;
|
||
|
|
|
||
|
|
$high_part = floor($big_date / $factor);
|
||
|
|
// lower 4 bytes
|
||
|
|
$low_part = floor((($big_date / $factor) - $high_part) * $factor);
|
||
|
|
|
||
|
|
// Make HEX string
|
||
|
|
$res = '';
|
||
|
|
|
||
|
|
for ($i = 0; $i < 4; ++$i) {
|
||
|
|
$hex = $low_part % 0x100;
|
||
|
|
$res .= pack('c', $hex);
|
||
|
|
$low_part /= 0x100;
|
||
|
|
}
|
||
|
|
for ($i = 0; $i < 4; ++$i) {
|
||
|
|
$hex = $high_part % 0x100;
|
||
|
|
$res .= pack('c', $hex);
|
||
|
|
$high_part /= 0x100;
|
||
|
|
}
|
||
|
|
return $res;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns a timestamp from an OLE container's date
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
* @static
|
||
|
|
* @param integer $string A binary string with the encoded date
|
||
|
|
* @return string The timestamp corresponding to the string
|
||
|
|
*/
|
||
|
|
public static function OLE2LocalDate($string)
|
||
|
|
{
|
||
|
|
if (strlen($string) != 8) {
|
||
|
|
return new PEAR_Error("Expecting 8 byte string");
|
||
|
|
}
|
||
|
|
|
||
|
|
// factor used for separating numbers into 4 bytes parts
|
||
|
|
$factor = pow(2, 32);
|
||
|
|
list(, $high_part) = unpack('V', substr($string, 4, 4));
|
||
|
|
list(, $low_part) = unpack('V', substr($string, 0, 4));
|
||
|
|
|
||
|
|
$big_date = ($high_part * $factor) + $low_part;
|
||
|
|
// translate to seconds
|
||
|
|
$big_date /= 10000000;
|
||
|
|
|
||
|
|
// days from 1-1-1601 until the beggining of UNIX era
|
||
|
|
$days = 134774;
|
||
|
|
|
||
|
|
// translate to seconds from beggining of UNIX era
|
||
|
|
$big_date -= $days * 24 * 3600;
|
||
|
|
return floor($big_date);
|
||
|
|
}
|
||
|
|
}
|