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ExcelExplorer.php
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ExcelExplorer.php
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<?php
//
// +----------------------------------+
// | Excel Explorer Version 2.3 |
// | Professional Edition |
// +----------------------------------+
//
/*
* This class provides functions for retrieve data stored in the
* Microsoft's Excel file.
*
*/
class ExcelExplorer {
var $known_date_formats = array(
// custom date formats
0x0 => 'd/m',
0x1 => 'd/m/yy',
0x2 => 'dd/mm/yy',
0x3 => 'd\ mmm',
0x4 => 'd\ mmm\ yy',
0x5 => 'dd\ mmm\ yy',
0x6 => 'mmm\ yy',
0x7 => 'mmmm\ yy',
0x8 => 'd\ mmmm\,\ yyyy',
0x9 => 'dd/mm/yy\ h:mm\ AM/PM',
0xa => 'dd/mm/yy\ h:mm',
0xb => 'mmmm',
0xc => 'mmmmm\-yy',
0xd => 'mmmm\ d',
0xe => 'd\ mmmm',
0xf => 'd/mm/yyyy',
0x10 => 'dd/mm/yyyy',
0x11 => 'd/m/yyyy',
0x12 => 'dd\-mmm\-yy',
// build-in date formats written as custom
0x010e => 'm/d/yyyy',
0x010f => 'd\-mmm\-yy',
0x0110 => 'd\-mmm',
0x0111 => 'mmm\-yy',
0x0112 => 'h:mm\ AM/PM',
0x0113 => 'h:mm:ss\ AM/PM',
0x0114 => 'h:mm',
0x0115 => 'h:mm:ss',
0x0116 => 'm/d/yyyy\ h:mm',
0x012d => 'mm:ss',
0x012e => '[h]:mm:ss',
0x012f => 'mm:ss.0'
);
var $last_block;
var $last_small_block;
var $fat;
var $small_fat;
var $directory;
var $worksheet;
var $date1904;
/*
* Public interface
*
*/
/*
* Data convertion functions
*
*/
function IsUnicode($data) {
if( !is_string($data) || (ord($data[0])==0) ) {
return false;
}
return true;
}
function AsIs($data) {
if( is_string($data) ) {
return substr($data,1);
} else {
return $data;
}
}
function AsPlain($data) {
if( is_string($data) ) {
if( ord($data[0])==0 ) {
return substr($data,1);
} else {
$s = '';
for( $i=1; $i<strlen($data); $i+=2 )
$s .= $data[$i];
return $s;
}
} else {
return $data;
}
}
function AsHTML($data) {
if( is_string($data) ) {
if( ord($data[0])==0 ) {
return htmlspecialchars(substr($data,1));
} else {
$s = '';
for( $c=1; $c<strlen($data); $c+=2 ) {
$l = ord($data[$c]);
$h = ord($data[$c+1]);
if( ($h>0) || ($l<32) ) {
$s .= '&#'.(256*$h+$l).';';
} else {
$s .= htmlspecialchars($data[$c]);
}
}
return $s;
}
} else {
return $data;
}
}
function AsDate($data) {
$d = $this->AsPlain($data);
if( is_numeric($d) )
return $this->as_date($d);
return false;
}
/*
* Worksheets functions
*
*/
function GetWorksheetsNum() {
return count($this->worksheet);
}
function GetWorksheetType($n) {
return $this->worksheet[$n]['type'];
}
function GetWorksheetTitle($n) {
return $this->worksheet[$n]['title'];
}
function IsEmptyWorksheet($n) {
return !( is_array($this->worksheet[$n]['data']) &&
($this->worksheet[$n]['last_row'] >= 0) &&
($this->worksheet[$n]['last_col'] >= 0) );
}
function IsHiddenWorksheet($n) {
return $this->worksheet[$n]['hidden'];
}
/*
* Columns functions
*
*/
function GetLastColumnIndex($n) {
if( isset($this->worksheet[$n]['last_col']) &&
($this->worksheet[$n]['last_col'] >= 0) )
return $this->worksheet[$n]['last_col'];
else
return false;
}
function GetColumnLevel($n,$col) {
if( isset($this->worksheet[$n]['data']['column_level'][$col]) )
return $this->worksheet[$n]['data']['column_level'][$col];
return 0;
}
function IsEmptyColumn($n,$col) {
if( isset($this->worksheet[$n]['last_row']) ) {
for($i=0; $i<=$this->worksheet[$n]['last_row']; $i++)
if( isset($this->worksheet[$n]['data']['cell_type'][$i][$col]) )
return false;
}
return true;
}
function IsHiddenColumn($n,$col) {
if( isset($this->worksheet[$n]['data']['column_hidden'][$col]) )
return true;
return false;
}
function GetColumnWidth($n,$col) {
if( isset($this->worksheet[$n]['data']['column_width'][$col]) ) {
return $this->worksheet[$n]['data']['column_width'][$col];
} elseif ( isset($this->worksheet[$n]['data']['defcolwidth']) ) {
return $this->worksheet[$n]['data']['defcolwidth'];
}
return false;
}
/*
* Rows functions
*
*/
function GetLastRowIndex($n) {
if( isset($this->worksheet[$n]['last_row']) &&
($this->worksheet[$n]['last_row'] >= 0) )
return $this->worksheet[$n]['last_row'];
else
return false;
}
function GetRowLevel($n,$row) {
if( isset($this->worksheet[$n]['data']['row_level'][$row]) )
return $this->worksheet[$n]['data']['row_level'][$row];
return 0;
}
function IsEmptyRow($n,$row) {
return (count($this->worksheet[$n]['data']['cell_type'][$row])==0);
}
function IsHiddenRow($n,$row) {
if( isset($this->worksheet[$n]['data']['row_hidden'][$row]) )
return true;
return false;
}
function GetRowHeight($n,$row) {
if( isset($this->worksheet[$n]['data']['row_height'][$row]) ) {
return $this->worksheet[$n]['data']['row_height'][$row];
} elseif ( isset($this->worksheet[$n]['data']['defrowheight']) ) {
return $this->worksheet[$n]['data']['defrowheight'];
}
return false;
}
/*
* Cells functions
*
*/
function GetCellLink($n,$col,$row) {
if( !isset($this->worksheet[$n]['data']['cell_link'][$row][$col]) )
return false;
$d = $this->worksheet[$n]['data']['cell_link'][$row][$col];
if( !is_numeric($d) || !isset($this->link[$d]) )
return false;
return $this->link[$d];
}
function GetCellType($n,$col,$row) {
if( !isset($this->worksheet[$n]['data']['cell_type'][$row][$col]) ) {
return 0;
}
$t = $this->worksheet[$n]['data']['cell_type'][$row][$col];
if( $t==1 ) {
$xf_ind = $this->worksheet[$n]['data']['cell_xf'][$row][$col];
$f = $this->xf['format'][$xf_ind];
if( $this->is_percent_format($f) )
return 2;
if( $this->is_date_format($f) )
return 6;
}
return $t;
}
function GetCellData($n,$col,$row) {
$t = $this->GetCellType($n,$col,$row);
if( ($t==0) || ($t==7) || ($t==8) ) {
return null;
}
if( $t==3 ) {
$ind = $this->worksheet[$n]['data']['cell_data'][$row][$col];
if( isset($ind) && is_numeric($ind) && isset($this->sst[$ind]) )
return $this->sst[$ind];
else
return false;
}
$d = $this->worksheet[$n]['data']['cell_data'][$row][$col];
if( $t==6 ) {
$xf_ind = $this->worksheet[$n]['data']['cell_xf'][$row][$col];
$f = $this->xf['format'][$xf_ind];
return $this->date_format($d,$f);
}
return $d;
}
function GetCellStyle($n,$col,$row) {
$col_set = false;
$row_set = false;
if( isset($this->worksheet[$n]['data']['column_xf'][$col]) ) {
$col_set = true;
}
if( isset($this->worksheet[$n]['data']['row_xf'][$row]) ) {
$row_set = true;
}
if( $row_set && $col_set ) {
if( $this->worksheet[$n]['data']['row_order'][$row] >
$this->worksheet[$n]['data']['column_order'][$col] ) {
$dxf_ind = $this->worksheet[$n]['data']['row_xf'][$row];
} else {
$dxf_ind = $this->worksheet[$n]['data']['column_xf'][$col];
}
} elseif ( $row_set ) {
$dxf_ind = $this->worksheet[$n]['data']['row_xf'][$row];
} elseif ( $col_set ) {
$dxf_ind = $this->worksheet[$n]['data']['column_xf'][$col];
} else {
$dxf_ind = 15;
}
if( !isset($this->worksheet[$n]['data']['cell_xf'][$row][$col]) ) {
$xf_ind = $dxf_ind;
} else {
$xf_ind = $this->worksheet[$n]['data']['cell_xf'][$row][$col];
}
$style = array();
$xfi = false;
if( isset($this->xf['font'][$xf_ind]) ) {
$xfi = $xf_ind;
} elseif( isset($this->xf['font'][$dxf_ind]) ) {
$xfi = $dxf_ind;
}
if( isset($this->xf['font'][$xfi]) ) {
$font_ind = $this->xf['font'][$xfi];
if( $font_ind > 3 ) $font_ind--;
if( isset($this->font[$font_ind]) ) {
$style['font'] = $this->font[$font_ind];
unset($style['font']['pal_ind']);
$style['font_index'] = $font_ind;
$pal_ind = $this->font[$font_ind]['pal_ind'];
if( isset($this->palette[$pal_ind]) ) {
$style['color'] = $this->palette[$pal_ind];
}
}
}
$xfi = false;
if( isset($this->xf['format'][$xf_ind]) ) {
$xfi = $xf_ind;
} elseif( isset($this->xf['format'][$dxf_ind]) ) {
$xfi = $dxf_ind;
}
if( isset($this->xf['format'][$xfi]) ) {
$format_ind = $this->xf['format'][$xfi];
if( isset($this->format[$format_ind]) ) {
$style['format'] = $this->format[$format_ind];
$style['format_index'] = $format_ind;
}
if( (($format_ind >= 0) && ($format_ind <= 4)) ||
(($format_ind >= 9) && ($format_ind <= 0x16)) ||
(($format_ind >= 0x25) && ($format_ind <= 0x28)) ||
(($format_ind >= 0x2d) && ($format_ind <= 0x31)) ) {
$style['format_index'] = $format_ind;
}
}
$xfi = false;
if( isset($this->xf['bgcolor'][$xf_ind]) ) {
$xfi = $xf_ind;
} elseif( isset($this->xf['bgcolor'][$dxf_ind]) ) {
$xfi = $dxf_ind;
}
if( isset($this->xf['bgcolor'][$xfi]) ) {
$bgcolor_ind = $this->xf['bgcolor'][$xfi];
if( isset($this->palette[$bgcolor_ind]) ) {
$style['bgcolor'] = $this->palette[$bgcolor_ind];
}
}
$xfi = false;
if( isset($this->xf['align'][$xf_ind]) ) {
$xfi = $xf_ind;
} elseif( isset($this->xf['align'][$dxf_ind]) ) {
$xfi = $dxf_ind;
}
if( isset($this->xf['align'][$xfi]) ) {
$align = $this->xf['align'][$xfi];
$style['align'] = $align & 7;
$style['valign'] = ($align >> 4) & 7;
$style['word_wrap'] = (boolean)(($align >> 3) & 1);
}
return $style;
}
function GetMergedColumnsNum($n,$col,$row,$exclude_hidden=false) {
if( !isset($this->worksheet[$n]['data']['merged_columns']) ||
!isset($this->worksheet[$n]['data']['merged_columns'][$row][$col]) ) {
return 0;
}
$mc = (int)($this->worksheet[$n]['data']['merged_columns'][$row][$col]);
if( $exclude_hidden ) {
$new_mc = $mc;
for( $i=$col; $i<$col+$mc; $i++ ) {
if( $this->IsHiddenColumn($n,$i) )
$new_mc--;
}
$mc = $new_mc;
}
return $mc;
}
function GetMergedRowsNum($n,$col,$row,$exclude_hidden=false) {
if( !isset($this->worksheet[$n]['data']['merged_rows']) ||
!isset($this->worksheet[$n]['data']['merged_rows'][$row][$col]) ) {
return 0;
}
$mc = (int)($this->worksheet[$n]['data']['merged_rows'][$row][$col]);
if( $exclude_hidden ) {
$new_mc = $mc;
for( $i=$row; $i<$row+$mc; $i++ ) {
if( $this->IsHiddenRow($n,$i) )
$new_mc--;
}
$mc = $new_mc;
}
return $mc;
}
/*
* Miscellaneous functions
*
*/
function SerializeData() {
$sst = '';
for( $i=0; $i<count($this->sst); $i++ ) {
$sz = strlen($this->sst[$i]);
$sst .= chr($sz & 0xFF).chr($sz >> 8).$this->sst[$i];
}
return serialize(array(
$this->worksheet,
$sst,
$this->xf,
$this->format,
$this->font,
$this->palette,
$this->date1904,
$this->link
));
}
function UnserializeData($data) {
$data = unserialize($data);
if( !is_array($data) || (count($data)<8) ) {
return false;
}
$this->worksheet = $data[0];
$ofs = 0;
$this->sst = array();
while( $ofs<strlen($data[1])-1 ) {
$sz = ord($data[1][$ofs])|(ord($data[1][$ofs+1])<<8);
$this->sst[] = substr($data[1],$ofs+2,$sz);
$ofs += 2+$sz;
}
$this->xf = $data[2];
$this->format = $data[3];
$this->font = $data[4];
$this->palette = $data[5];
$this->date1904 = $data[6];
$this->link = $data[7];
return true;
}
function GetFontsList() {
$fl = array();
for( $i=0; $i<count($this->font); $i++ ) {
$f = $this->font[$i];
unset($f['pal_ind']);
$pal_ind = $this->font[$i]['pal_ind'];
if( isset($this->palette[$pal_ind]) ) {
$f['color'] = $this->palette[$pal_ind];
}
$fl[] = $f;
}
return $fl;
}
function GetFormatsList() {
return $this->format;
}
/*
* End of public interface
*
*/
function is_percent_format($f) {
if( ($f==9) || ($f==0x0a) )
return true;
if( !isset($this->format[$f]) )
return false;
$fs = $this->format[$f];
if( !$fs || $this->IsUnicode($fs) )
return false;
$fs = $this->AsPlain($fs);
if( (strlen($fs) > 0) && ($fs[strlen($fs)-1] == '%') )
return true;
return false;
}
function is_date_format($f) {
if ( (($f>=0x0e) && ($f<=0x16)) || (($f>=0x2d) && ($f<=0x2f)) )
return true;
if( !isset($this->format[$f]) )
return false;
$fs = $this->format[$f];
if( !$fs || $this->IsUnicode($fs) )
return false;
$fs = $this->AsPlain($fs);
if( $fs=='' )
return false;
$f = 0xff;
foreach( $this->known_date_formats as $i => $value )
if( !strcmp($value,$fs) ) {
$f = $i;
break;
}
if( $f==0xff )
return false;
return true;
}
function as_date($s) {
if( $s<0 )
return $s;
$DaysInMonths = array(0,31,59,90,120,151,181,212,243,273,304,334);
$DaysInMonthsV = array(0,31,60,91,121,152,182,213,244,274,305,335);
if( ($this->date1904==0) && ($s<60) )
$s++;
// days in 1900 years (1-1899)
$ds = (int)$s+693595-2+1462*$this->date1904;
// 400-year periods in $ds
$d1 = (int)($ds/146097);
// days after last 400-year period (0-146096)
$d2 = $ds-146097*$d1;
// 100-year periods in $d2
$d3 = (int)($d2/36524);
if( $d3>3 )
$d3 = 3;
// days after last 100-year period (0-36523 or 0-36524)
$d4 = $d2-36524*$d3;
// 4-year periods in $d4
$d5 = (int)($d4/1461);
// days after last 4-year period (0-1460)
$d6 = $d4-1461*$d5;
// years in $d6
$d7 = (int)($d6/365);
if( $d7>3 )
$d7 = 3;
// days in a last year (1-365 or 1-366)
$d8 = $d6-365*$d7+1;
$date_year = 400*$d1 + 100*$d3 + 4*$d5 + $d7 + 1;
$v = false;
if( (($date_year % 400) == 0) ||
((($date_year % 100) != 0) && (($date_year % 4) == 0)) )
$v = true;
$i = 1;
if( $v ) {
while( ($i<12) && ($d8>$DaysInMonthsV[$i]) ) $i++;
$date_month = $i;
$date_day = $d8 - $DaysInMonthsV[$i-1];
} else {
while( ($i<12) && ($d8>$DaysInMonths[$i]) ) $i++;
$date_month = $i;
$date_day = $d8 - $DaysInMonths[$i-1];
}
$tm = $s-(int)$s;
$tm = round(24*60*60*1000*$tm);
$time_msec = ($tm % 1000);
$tm = (int)(($tm-$time_msec)/1000);
$time_sec = ($tm % 60);
$tm = (int)(($tm-$time_sec)/60);
$time_min = ($tm % 60);
$tm = (int)(($tm-$time_min)/60);
$time_hour = ($tm % 24);
return array(
'year' => $date_year,
'month' => $date_month,
'day' => $date_day,
'hour' => $time_hour,
'min' => $time_min,
'sec' => $time_sec,
'usec' => $time_msec
);
}
function date_format($s,$f) {
if ( !((($f>=0x0e) && ($f<=0x16)) || (($f>=0x2d) && ($f<=0x2f))) ) {
$fs = $this->AsPlain($this->format[$f]);
foreach( $this->known_date_formats as $i => $value )
if( !strcmp($value,$fs) ) {
$f = $i;
break;
}
} else {
$f += 0x100;
}
$ret = $this->as_date($s);
$date_year = $ret['year'];
$date_month = $ret['month'];
$date_day = $ret['day'];
$time_hour = $ret['hour'];
$time_min = $ret['min'];
$time_sec = $ret['sec'];
$time_msec = $ret['usec'];
for($i=1; $i<=12; $i++) {
$month[$i] = date('F',mktime(12,0,0,$i,10,2000));
$month3[$i] = date('M',mktime(12,0,0,$i,10,2000));
}
$date_year2 = sprintf('%02d',($date_year % 100));
$date_month2 = sprintf('%02d',$date_month);
$date_day2 = sprintf('%02d',$date_day);
$time_hour2 = sprintf('%02d',$time_hour);
$time_min2 = sprintf('%02d',$time_min);
$time_sec2 = sprintf('%02d',$time_sec);
if( $time_hour>=12 ) {
$time_ap = 'PM';
$time_hour12 = $time_hour-12;
} else {
$time_ap = 'AM';
$time_hour12 = $time_hour;
}
if( $time_hour12==0 )
$time_hour12 = 12;
$time_hour_full = (int)($s*24);
$s = '';
switch ($f) {
//--- CUSTOM ---
// d/m/yy
case 1:
$s = '/'.$date_year2;
// d/m
case 0:
$s = $date_day.'/'.$date_month.$s;
break;
// dd/mm/yy\ h:mm\ AM/PM
case 9:
$s = ' '.$time_hour12.':'.$time_min2.' '.$time_ap;
// dd/mm/yy
case 2:
$s = $date_day2.'/'.$date_month2.'/'.$date_year2.$s;
break;
// d\ mmm\ yy
case 4:
$s = ' '.$date_year2;
// d\ mmm
case 3:
$s = $date_day.' '.$month3[$date_month].$s;
break;
// dd\ mmm\ yy
case 5:
$s = $date_day2.' '.$month3[$date_month].' '.$date_year2;
break;
// mmm\ yy
case 6:
$s = $month3[$date_month].' '.$date_year2;
break;
// mmmm\ yy
case 7:
$s = $month[$date_month].' '.$date_year2;
break;
// d\ mmmm\,\ yyyy
case 8:
$s = $date_day.' '.$month[$date_month].', '.$date_year;
break;
// dd/mm/yy\ h:mm
case 0x0a:
$s = $date_day2.'/'.$date_month2.'/'.$date_year2.' '.$time_hour.':'.$time_min2;
break;
// mmmm\ d
case 0x0d:
$s = ' '.$date_day;
// mmmm
case 0x0b:
$s = $month[$date_month].$s;
break;
// mmmmm\-yy
case 0x0c:
$s = $month[$date_month][0].'-'.$date_year2;
break;
// d\ mmmm
case 0x0e:
$s = $date_day.' '.$month[$date_month];
break;
// d/mm/yyyy
case 0x0f:
$s = $date_day.'/'.$date_month2.'/'.$date_year;
break;
// dd/mm/yyyy
case 0x10:
$s = $date_day2.'/'.$date_month2.'/'.$date_year;
break;
// d/m/yyyy
case 0x11:
$s = $date_day.'/'.$date_month.'/'.$date_year;
break;
// dd\-mmm\-yy
case 0x12:
$s = $date_day2.'-'.$month3[$date_month].'-'.$date_year2;
break;
//--- BUILD-IN ---
// m/d/yyyy\ h:mm
case 0x0116:
$s = ' '.$time_hour.':'.$time_min2;
// m/d/yyyy
case 0x010e:
// Month and Day order ??? (must be obtained from locale settings/date format)
$s = $date_month.'/'.$date_day.'/'.$date_year.$s;
break;
// d\-mmm\-yy
case 0x010f:
$s = '-'.$date_year2;
// d\-mmm
case 0x0110:
$s = $date_day.'-'.$month3[$date_month].$s;
break;
// mmm\-yy
case 0x0111:
$s = $month3[$date_month].'-'.$date_year2;
break;
// h:mm AM/PM
case 0x0112:
$s = $time_hour12.':'.$time_min2.' '.$time_ap;
break;
// h:mm:ss AM/PM
case 0x0113:
$s = $time_hour12.':'.$time_min2.':'.$time_sec2.' '.$time_ap;
break;
// h:mm:ss
case 0x0115:
$s = ':'.$time_sec2;
// h:mm
case 0x0114:
$s = $time_hour.':'.$time_min2.$s;
break;
// mm:ss
case 0x012d:
$s = $time_min2.':'.$time_sec2;
break;
// [h]:mm:ss
case 0x012e:
$s = $time_hour_full.':'.$time_min2.':'.$time_sec2;
break;
// mm:ss.0
case 0x012f:
$s = $time_min2.':'.$time_sec2.'.'.round(($time_msec-1)/100);
break;
}
return array(
'string'=> $s,
'year' => $date_year,
'month' => $date_month,
'day' => $date_day,
'hour' => $time_hour,
'min' => $time_min,
'sec' => $time_sec,
'usec' => $time_msec
);
}
function s2l($s) {
return 16777216*ord($s[3])+(ord($s[0])|(ord($s[1])<<8)|(ord($s[2])<<16));
}
function chain($first) {
$chain = array();
$next = $first;
while( ($next!=0xfffffffe) &&
($next <= $this->last_block) &&
(($next+1) <= count($this->fat)) ) {
$chain[] = $next;
$next = $this->fat[$next];
}
if( $next != 0xfffffffe ) return false;
return $chain;
}
function small_chain($first) {
$chain = array();
$next = $first;
while( ($next!=0xfffffffe) &&
($next <= $this->last_small_block) &&
(($next+1) <= count($this->small_fat)) ) {
$chain[] = $next;
$next = $this->small_fat[$next];
}
if( $next != 0xfffffffe ) return false;
return $chain;
}
function stream($item_name,$item_num=0) {
$dt = ord($this->directory[$item_num*0x80+0x42]);
$prev = $this->s2l(substr($this->directory,$item_num*0x80+0x44,4));
$next = $this->s2l(substr($this->directory,$item_num*0x80+0x48,4));
$dir = $this->s2l(substr($this->directory,$item_num*0x80+0x4c,4));
$curr_name = '';
if( ($dt==2) || ($dt==5) )
for( $i=0;
$i < (ord($this->directory[$item_num*0x80+0x40]) +
256*ord($this->directory[$item_num*0x80+0x41]))/2-1;
$i++ )
$curr_name .= $this->directory[$item_num*0x80+$i*2];
if( (($dt==2) || ($dt==5)) && (strcasecmp($curr_name,$item_name)==0) )
return $item_num;
if( $prev != 0xffffffff ) {
$i = $this->stream($item_name,$prev);
if( $i>=0 ) return $i;
}
if( $next != 0xffffffff ) {
$i = $this->stream($item_name,$next);
if( $i>=0 ) return $i;
}
if( $dir != 0xffffffff ) {
$i = $this->stream($item_name,$dir);
if( $i>=0 ) return $i;
}
return -1;
}
function rk($rk) {
if( $rk & 2 ) {
$val = ($rk & 0xfffffffc) >> 2;
if( $rk & 1 ) $val = $val / 100;
return (int)$val;
}
$frk = $rk;
$fexp = (($frk & 0x7ff00000) >> 20) - 1023;
$val = 1+(($frk & 0x000fffff) >> 2)/262144;
if( $fexp > 0 ) {
for( $i=0; $i<$fexp; $i++ )
$val *= 2;
} else {
if( $fexp==-1023 ) {
$val=0;
} else {
for( $i=0; $i<abs($fexp); $i++ )
$val /= 2;
}
}
if( $rk & 1 ) $val = $val / 100;
if( $rk & 0x80000000 ) $val = -$val;
return (float)$val;
}
function ieee($ieee) {
$num_lo = 16777216*ord($ieee[3])+(ord($ieee[0])|(ord($ieee[1])<<8)|(ord($ieee[2])<<16));
$num_hi = 16777216*ord($ieee[7])+(ord($ieee[4])|(ord($ieee[5])<<8)|(ord($ieee[6])<<16));
$fexp = (($num_hi & 0x7ff00000) >> 20) - 1023;
$val = 1+(($num_hi & 0x000fffff)+$num_lo/4294967296)/1048576;
if( ($fexp==1024) || ($fexp==-1023) )
return (float)0;
if( $fexp > 0 ) {
for( $i=0; $i<$fexp; $i++ )
$val *= 2;
} else {
for( $i=0; $i<abs($fexp); $i++ )
$val /= 2;
}
if( $num_hi & 0x80000000 ) $val = -$val;
return (float)$val;
}
function explore_worksheet($ofs) {
if( //(strlen($this->bd) < 4) ||
//(strlen($this->bd) < 4+256*ord($this->bd[3])+ord($this->bd[2])) ||
(ord($this->bd[$ofs]) != 0x09) )
return 1;
$biff_ver = $this->biff_version;
$data = array('last_row'=>-1,'last_col'=>-1);
$wtype = ord($this->bd[$ofs+6])|(ord($this->bd[$ofs+7])<<8);
if( $wtype != 0x0010 )
return $data;
$merged = array();
$item = 0;
$defcolwidth = false;
while( (ord($this->bd[$ofs])!=0x0a) && ($ofs<strlen($this->bd)) ) {
switch (ord($this->bd[$ofs])|(ord($this->bd[$ofs+1])<<8)) {
// COLINFO
case 0x007d:
if( (ord($this->bd[$ofs+2])|(ord($this->bd[$ofs+3])<<8)) < 10 )
return 1;
$fc = ord($this->bd[$ofs+4])|(ord($this->bd[$ofs+5])<<8);
$lc = ord($this->bd[$ofs+6])|(ord($this->bd[$ofs+7])<<8);
$width = ord($this->bd[$ofs+8])|(ord($this->bd[$ofs+9])<<8);
$xf = ord($this->bd[$ofs+10])|(ord($this->bd[$ofs+11])<<8);
$opts = ord($this->bd[$ofs+12])|(ord($this->bd[$ofs+13])<<8);
$hidden = (($opts & 1)==1);
$level = ($opts & 0x0700) >> 8;
for( $i=$fc; $i<=$lc; $i++ ) {
if( $hidden ) {
$data['column_hidden'][$i] = true;
}
if( $level > 0 ) {
$data['column_level'][$i] = $level;
}
$data['column_width'][$i] = $width;