src/helpers/XLSXWriter.php
<?php
namespace luya\yii\helpers;
use ZipArchive;
/*
* @license MIT License
*
* @see https://raw.githubusercontent.com/mk-j/PHP_XLSXWriter/master/xlsxwriter.class.php
* */
class XLSXWriter
{
//https://www.ecma-international.org/publications/standards/Ecma-376.htm
//http://officeopenxml.com/SSstyles.php
//------------------------------------------------------------------
//https://office.microsoft.com/en-us/excel-help/excel-specifications-and-limits-HP010073849.aspx
public const EXCEL_2007_MAX_ROW = 1048576;
public const EXCEL_2007_MAX_COL = 16384;
//------------------------------------------------------------------
protected $title;
protected $subject;
protected $author;
protected $company;
protected $description;
protected $tempdir;
protected $keywords = [];
protected $current_sheet;
protected $sheets = [];
protected $temp_files = [];
protected $cell_styles = [];
protected $number_formats = [];
public function __construct()
{
if (!ini_get('date.timezone')) {
//using date functions can kick out warning if this isn't set
date_default_timezone_set('UTC');
}
$this->addCellStyle($number_format = 'GENERAL', $style_string = null);
$this->addCellStyle($number_format = 'GENERAL', $style_string = null);
$this->addCellStyle($number_format = 'GENERAL', $style_string = null);
$this->addCellStyle($number_format = 'GENERAL', $style_string = null);
}
public function setTitle($title = '')
{
$this->title = $title;
}
public function setSubject($subject = '')
{
$this->subject = $subject;
}
public function setAuthor($author = '')
{
$this->author = $author;
}
public function setCompany($company = '')
{
$this->company = $company;
}
public function setKeywords($keywords = '')
{
$this->keywords = $keywords;
}
public function setDescription($description = '')
{
$this->description = $description;
}
public function setTempDir($tempdir = '')
{
$this->tempdir = $tempdir;
}
public function __destruct()
{
if (!empty($this->temp_files)) {
foreach ($this->temp_files as $temp_file) {
@unlink($temp_file);
}
}
}
protected function tempFilename()
{
$tempdir = !empty($this->tempdir) ? $this->tempdir : sys_get_temp_dir();
$filename = tempnam($tempdir, "xlsx_writer_");
$this->temp_files[] = $filename;
return $filename;
}
public function writeToStdOut()
{
$temp_file = $this->tempFilename();
$this->writeToFile($temp_file);
readfile($temp_file);
}
public function writeToString()
{
$temp_file = $this->tempFilename();
$this->writeToFile($temp_file);
$string = file_get_contents($temp_file);
return $string;
}
public function writeToFile($filename)
{
foreach ($this->sheets as $sheet_name => $sheet) {
$this->finalizeSheet($sheet_name);//making sure all footers have been written
}
if (file_exists($filename)) {
if (is_writable($filename)) {
@unlink($filename); //if the zip already exists, remove it
} else {
self::log("Error in " . self::class . "::" . __FUNCTION__ . ", file is not writeable.");
return;
}
}
$zip = new ZipArchive();
if (empty($this->sheets)) {
self::log("Error in " . self::class . "::" . __FUNCTION__ . ", no worksheets defined.");
return;
}
if (!$zip->open($filename, ZipArchive::CREATE)) {
self::log("Error in " . self::class . "::" . __FUNCTION__ . ", unable to create zip.");
return;
}
$zip->addEmptyDir("docProps/");
$zip->addFromString("docProps/app.xml", $this->buildAppXML());
$zip->addFromString("docProps/core.xml", $this->buildCoreXML());
$zip->addEmptyDir("_rels/");
$zip->addFromString("_rels/.rels", $this->buildRelationshipsXML());
$zip->addEmptyDir("xl/worksheets/");
foreach ($this->sheets as $sheet) {
$zip->addFile($sheet->filename, "xl/worksheets/" . $sheet->xmlname);
}
$zip->addFromString("xl/workbook.xml", $this->buildWorkbookXML());
$zip->addFile(
$this->writeStylesXML(),
"xl/styles.xml"
); //$zip->addFromString("xl/styles.xml" , self::buildStylesXML() );
$zip->addFromString("[Content_Types].xml", $this->buildContentTypesXML());
$zip->addEmptyDir("xl/_rels/");
$zip->addFromString("xl/_rels/workbook.xml.rels", $this->buildWorkbookRelsXML());
$zip->close();
}
protected function initializeSheet(
$sheet_name,
$col_widths = [],
$auto_filter = false,
$freeze_rows = false,
$freeze_columns = false
) {
//if already initialized
if ($this->current_sheet == $sheet_name || isset($this->sheets[$sheet_name])) {
return;
}
$sheet_filename = $this->tempFilename();
$sheet_xmlname = 'sheet' . (count($this->sheets) + 1) . ".xml";
$this->sheets[$sheet_name] = (object)[
'filename' => $sheet_filename,
'sheetname' => $sheet_name,
'xmlname' => $sheet_xmlname,
'row_count' => 0,
'file_writer' => new XLSXWriter_BuffererWriter($sheet_filename),
'columns' => [],
'merge_cells' => [],
'max_cell_tag_start' => 0,
'max_cell_tag_end' => 0,
'auto_filter' => $auto_filter,
'freeze_rows' => $freeze_rows,
'freeze_columns' => $freeze_columns,
'finalized' => false,
];
$sheet = &$this->sheets[$sheet_name];
$tabselected = count($this->sheets) == 1 ? 'true' : 'false';//only first sheet is selected
$max_cell = XLSXWriter::xlsCell(self::EXCEL_2007_MAX_ROW, self::EXCEL_2007_MAX_COL);//XFE1048577
$sheet->file_writer->write('<?xml version="1.0" encoding="UTF-8" standalone="yes"?>' . "\n");
$sheet->file_writer->write('<worksheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships">');
$sheet->file_writer->write('<sheetPr filterMode="false">');
$sheet->file_writer->write('<pageSetUpPr fitToPage="false"/>');
$sheet->file_writer->write('</sheetPr>');
$sheet->max_cell_tag_start = $sheet->file_writer->ftell();
$sheet->file_writer->write('<dimension ref="A1:' . $max_cell . '"/>');
$sheet->max_cell_tag_end = $sheet->file_writer->ftell();
$sheet->file_writer->write('<sheetViews>');
$sheet->file_writer->write('<sheetView colorId="64" defaultGridColor="true" rightToLeft="false" showFormulas="false" showGridLines="true" showOutlineSymbols="true" showRowColHeaders="true" showZeros="true" tabSelected="' . $tabselected . '" topLeftCell="A1" view="normal" windowProtection="false" workbookViewId="0" zoomScale="100" zoomScaleNormal="100" zoomScalePageLayoutView="100">');
if ($sheet->freeze_rows && $sheet->freeze_columns) {
$sheet->file_writer->write('<pane ySplit="' . $sheet->freeze_rows . '" xSplit="' . $sheet->freeze_columns . '" topLeftCell="' . self::xlsCell(
$sheet->freeze_rows,
$sheet->freeze_columns
) . '" activePane="bottomRight" state="frozen"/>');
$sheet->file_writer->write('<selection activeCell="' . self::xlsCell(
$sheet->freeze_rows,
0
) . '" activeCellId="0" pane="topRight" sqref="' . self::xlsCell($sheet->freeze_rows, 0) . '"/>');
$sheet->file_writer->write('<selection activeCell="' . self::xlsCell(
0,
$sheet->freeze_columns
) . '" activeCellId="0" pane="bottomLeft" sqref="' . self::xlsCell(
0,
$sheet->freeze_columns
) . '"/>');
$sheet->file_writer->write('<selection activeCell="' . self::xlsCell(
$sheet->freeze_rows,
$sheet->freeze_columns
) . '" activeCellId="0" pane="bottomRight" sqref="' . self::xlsCell(
$sheet->freeze_rows,
$sheet->freeze_columns
) . '"/>');
} elseif ($sheet->freeze_rows) {
$sheet->file_writer->write('<pane ySplit="' . $sheet->freeze_rows . '" topLeftCell="' . self::xlsCell(
$sheet->freeze_rows,
0
) . '" activePane="bottomLeft" state="frozen"/>');
$sheet->file_writer->write('<selection activeCell="' . self::xlsCell(
$sheet->freeze_rows,
0
) . '" activeCellId="0" pane="bottomLeft" sqref="' . self::xlsCell(
$sheet->freeze_rows,
0
) . '"/>');
} elseif ($sheet->freeze_columns) {
$sheet->file_writer->write('<pane xSplit="' . $sheet->freeze_columns . '" topLeftCell="' . self::xlsCell(
0,
$sheet->freeze_columns
) . '" activePane="topRight" state="frozen"/>');
$sheet->file_writer->write('<selection activeCell="' . self::xlsCell(
0,
$sheet->freeze_columns
) . '" activeCellId="0" pane="topRight" sqref="' . self::xlsCell(
0,
$sheet->freeze_columns
) . '"/>');
} else { // not frozen
$sheet->file_writer->write('<selection activeCell="A1" activeCellId="0" pane="topLeft" sqref="A1"/>');
}
$sheet->file_writer->write('</sheetView>');
$sheet->file_writer->write('</sheetViews>');
$sheet->file_writer->write('<cols>');
$i = 0;
if (!empty($col_widths)) {
foreach ($col_widths as $column_width) {
$sheet->file_writer->write('<col collapsed="false" hidden="false" max="' . ($i + 1) . '" min="' . ($i + 1) . '" style="0" customWidth="true" width="' . floatval($column_width) . '"/>');
$i++;
}
}
$sheet->file_writer->write('<col collapsed="false" hidden="false" max="1024" min="' . ($i + 1) . '" style="0" customWidth="false" width="11.5"/>');
$sheet->file_writer->write('</cols>');
$sheet->file_writer->write('<sheetData>');
}
private function addCellStyle($number_format, $cell_style_string)
{
$number_format_idx = self::add_to_list_get_index($this->number_formats, $number_format);
$lookup_string = $number_format_idx . ";" . $cell_style_string;
$cell_style_idx = self::add_to_list_get_index($this->cell_styles, $lookup_string);
return $cell_style_idx;
}
private function initializeColumnTypes($header_types)
{
$column_types = [];
foreach ($header_types as $v) {
$number_format = self::numberFormatStandardized($v);
$number_format_type = self::determineNumberFormatType($number_format);
$cell_style_idx = $this->addCellStyle($number_format, $style_string = null);
$column_types[] = [
'number_format' => $number_format,//contains excel format like 'YYYY-MM-DD HH:MM:SS'
'number_format_type' => $number_format_type, //contains friendly format like 'datetime'
'default_cell_style' => $cell_style_idx,
];
}
return $column_types;
}
public function writeSheetHeader($sheet_name, array $header_types, $col_options = null)
{
if (empty($sheet_name) || empty($header_types) || !empty($this->sheets[$sheet_name])) {
return;
}
$suppress_row = isset($col_options['suppress_row']) ? intval($col_options['suppress_row']) : false;
if (is_bool($col_options)) {
self::log("Warning! passing $suppress_row=false|true to writeSheetHeader() is deprecated, this will be removed in a future version.");
$suppress_row = intval($col_options);
}
$style = &$col_options;
$col_widths = isset($col_options['widths']) ? (array)$col_options['widths'] : [];
$auto_filter = isset($col_options['auto_filter']) ? intval($col_options['auto_filter']) : false;
$freeze_rows = isset($col_options['freeze_rows']) ? intval($col_options['freeze_rows']) : false;
$freeze_columns = isset($col_options['freeze_columns']) ? intval($col_options['freeze_columns']) : false;
$this->initializeSheet($sheet_name, $col_widths, $auto_filter, $freeze_rows, $freeze_columns);
$sheet = &$this->sheets[$sheet_name];
$sheet->columns = $this->initializeColumnTypes($header_types);
if (!$suppress_row) {
$header_row = array_keys($header_types);
$sheet->file_writer->write('<row collapsed="false" customFormat="false" customHeight="false" hidden="false" ht="12.1" outlineLevel="0" r="' . (1) . '">');
foreach ($header_row as $c => $v) {
$cell_style_idx = empty($style) ? $sheet->columns[$c]['default_cell_style'] : $this->addCellStyle(
'GENERAL',
json_encode(isset($style[0]) ? $style[$c] : $style)
);
$this->writeCell($sheet->file_writer, 0, $c, $v, $number_format_type = 'n_string', $cell_style_idx);
}
$sheet->file_writer->write('</row>');
$sheet->row_count++;
}
$this->current_sheet = $sheet_name;
}
public function writeSheetRow($sheet_name, array $row, $row_options = null)
{
if (empty($sheet_name)) {
return;
}
self::initializeSheet($sheet_name);
$sheet = &$this->sheets[$sheet_name];
if ((is_countable($sheet->columns) ? count($sheet->columns) : 0) < count($row)) {
$default_column_types = $this->initializeColumnTypes(array_fill(
$from = 0,
$until = count($row),
'GENERAL'
));//will map to n_auto
$sheet->columns = array_merge((array)$sheet->columns, $default_column_types);
}
if (!empty($row_options)) {
$ht = isset($row_options['height']) ? floatval($row_options['height']) : 12.1;
$customHt = isset($row_options['height']) ? true : false;
$hidden = isset($row_options['hidden']) ? (bool)($row_options['hidden']) : false;
$collapsed = isset($row_options['collapsed']) ? (bool)($row_options['collapsed']) : false;
$sheet->file_writer->write('<row collapsed="' . ($collapsed) . '" customFormat="false" customHeight="' . ($customHt) . '" hidden="' . ($hidden) . '" ht="' . ($ht) . '" outlineLevel="0" r="' . ($sheet->row_count + 1) . '">');
} else {
$sheet->file_writer->write('<row collapsed="false" customFormat="false" customHeight="false" hidden="false" ht="12.1" outlineLevel="0" r="' . ($sheet->row_count + 1) . '">');
}
$style = &$row_options;
$c = 0;
foreach ($row as $v) {
$number_format = $sheet->columns[$c]['number_format'];
$number_format_type = $sheet->columns[$c]['number_format_type'];
$cell_style_idx = empty($style) ? $sheet->columns[$c]['default_cell_style'] : $this->addCellStyle(
$number_format,
json_encode(isset($style[0]) ? $style[$c] : $style)
);
$this->writeCell($sheet->file_writer, $sheet->row_count, $c, $v, $number_format_type, $cell_style_idx);
$c++;
}
$sheet->file_writer->write('</row>');
$sheet->row_count++;
$this->current_sheet = $sheet_name;
}
public function countSheetRows($sheet_name = '')
{
$sheet_name = $sheet_name ?: $this->current_sheet;
return array_key_exists($sheet_name, $this->sheets) ? $this->sheets[$sheet_name]->row_count : 0;
}
protected function finalizeSheet($sheet_name)
{
if (empty($sheet_name) || $this->sheets[$sheet_name]->finalized) {
return;
}
$sheet = &$this->sheets[$sheet_name];
$sheet->file_writer->write('</sheetData>');
if (!empty($sheet->merge_cells)) {
$sheet->file_writer->write('<mergeCells>');
foreach ($sheet->merge_cells as $range) {
$sheet->file_writer->write('<mergeCell ref="' . $range . '"/>');
}
$sheet->file_writer->write('</mergeCells>');
}
$max_cell = self::xlsCell($sheet->row_count - 1, (is_countable($sheet->columns) ? count($sheet->columns) : 0) - 1);
if ($sheet->auto_filter) {
$sheet->file_writer->write('<autoFilter ref="A1:' . $max_cell . '"/>');
}
$sheet->file_writer->write('<printOptions headings="false" gridLines="false" gridLinesSet="true" horizontalCentered="false" verticalCentered="false"/>');
$sheet->file_writer->write('<pageMargins left="0.5" right="0.5" top="1.0" bottom="1.0" header="0.5" footer="0.5"/>');
$sheet->file_writer->write('<pageSetup blackAndWhite="false" cellComments="none" copies="1" draft="false" firstPageNumber="1" fitToHeight="1" fitToWidth="1" horizontalDpi="300" orientation="portrait" pageOrder="downThenOver" paperSize="1" scale="100" useFirstPageNumber="true" usePrinterDefaults="false" verticalDpi="300"/>');
$sheet->file_writer->write('<headerFooter differentFirst="false" differentOddEven="false">');
$sheet->file_writer->write('<oddHeader>&C&"Times New Roman,Regular"&12&A</oddHeader>');
$sheet->file_writer->write('<oddFooter>&C&"Times New Roman,Regular"&12Page &P</oddFooter>');
$sheet->file_writer->write('</headerFooter>');
$sheet->file_writer->write('</worksheet>');
$max_cell_tag = '<dimension ref="A1:' . $max_cell . '"/>';
$padding_length = $sheet->max_cell_tag_end - $sheet->max_cell_tag_start - strlen($max_cell_tag);
$sheet->file_writer->fseek($sheet->max_cell_tag_start);
$sheet->file_writer->write($max_cell_tag . str_repeat(" ", $padding_length));
$sheet->file_writer->close();
$sheet->finalized = true;
}
public function markMergedCell($sheet_name, $start_cell_row, $start_cell_column, $end_cell_row, $end_cell_column)
{
if (empty($sheet_name) || $this->sheets[$sheet_name]->finalized) {
return;
}
$this->initializeSheet($sheet_name);
$sheet = &$this->sheets[$sheet_name];
$startCell = self::xlsCell($start_cell_row, $start_cell_column);
$endCell = self::xlsCell($end_cell_row, $end_cell_column);
$sheet->merge_cells[] = $startCell . ":" . $endCell;
}
public function writeSheet(array $data, $sheet_name = '', array $header_types = [])
{
$sheet_name = empty($sheet_name) ? 'Sheet1' : $sheet_name;
$data = empty($data) ? [['']] : $data;
if (!empty($header_types)) {
$this->writeSheetHeader($sheet_name, $header_types);
}
foreach ($data as $i => $row) {
$this->writeSheetRow($sheet_name, $row);
}
$this->finalizeSheet($sheet_name);
}
protected function writeCell(
XLSXWriter_BuffererWriter &$file,
$row_number,
$column_number,
$value,
$num_format_type,
$cell_style_idx
) {
$cell_name = self::xlsCell($row_number, $column_number);
if (!is_scalar($value) || $value === '') { //objects, array, empty
$file->write('<c r="' . $cell_name . '" s="' . $cell_style_idx . '"/>');
} elseif (is_string($value) && $value[0] == '=') {
$file->write('<c r="' . $cell_name . '" s="' . $cell_style_idx . '" t="s"><f>' . self::xmlspecialchars($value) . '</f></c>');
} elseif ($num_format_type == 'n_date') {
$file->write('<c r="' . $cell_name . '" s="' . $cell_style_idx . '" t="n"><v>' . intval(self::convert_date_time($value)) . '</v></c>');
} elseif ($num_format_type == 'n_datetime') {
$file->write('<c r="' . $cell_name . '" s="' . $cell_style_idx . '" t="n"><v>' . self::convert_date_time($value) . '</v></c>');
} elseif ($num_format_type == 'n_numeric') {
$file->write('<c r="' . $cell_name . '" s="' . $cell_style_idx . '" t="n"><v>' . self::xmlspecialchars($value) . '</v></c>');//int,float,currency
} elseif ($num_format_type == 'n_string') {
$file->write('<c r="' . $cell_name . '" s="' . $cell_style_idx . '" t="inlineStr"><is><t>' . self::xmlspecialchars($value) . '</t></is></c>');
} elseif ($num_format_type == 'n_auto' || 1) { //auto-detect unknown column types
if (!is_string($value) || $value == '0' || ($value[0] != '0' && ctype_digit($value)) || preg_match(
"/^\-?(0|[1-9][0-9]*)(\.[0-9]+)?$/",
$value
)
) {
$file->write('<c r="' . $cell_name . '" s="' . $cell_style_idx . '" t="n"><v>' . self::xmlspecialchars($value) . '</v></c>');//int,float,currency
} else { //implied: ($cell_format=='string')
$file->write('<c r="' . $cell_name . '" s="' . $cell_style_idx . '" t="inlineStr"><is><t>' . self::xmlspecialchars($value) . '</t></is></c>');
}
}
}
protected function styleFontIndexes()
{
static $border_allowed = ['left', 'right', 'top', 'bottom'];
static $border_style_allowed = [
'thin',
'medium',
'thick',
'dashDot',
'dashDotDot',
'dashed',
'dotted',
'double',
'hair',
'mediumDashDot',
'mediumDashDotDot',
'mediumDashed',
'slantDashDot'
];
static $horizontal_allowed = ['general', 'left', 'right', 'justify', 'center'];
static $vertical_allowed = ['bottom', 'center', 'distributed', 'top'];
$default_font = ['size' => '10', 'name' => 'Arial', 'family' => '2'];
$fills = ['', ''];//2 placeholders for static xml later
$fonts = ['', '', '', ''];//4 placeholders for static xml later
$borders = [''];//1 placeholder for static xml later
$style_indexes = [];
foreach ($this->cell_styles as $i => $cell_style_string) {
$semi_colon_pos = strpos($cell_style_string, ";");
$number_format_idx = substr($cell_style_string, 0, $semi_colon_pos);
$style_json_string = substr($cell_style_string, $semi_colon_pos + 1);
try {
$style = @json_decode($style_json_string, $as_assoc = true, 512);
} catch (\Exception $e) {
$style = [];
}
$style_indexes[$i] = ['num_fmt_idx' => $number_format_idx];//initialize entry
if (isset($style['border']) && is_string($style['border'])) {//border is a comma delimited str
$border_value['side'] = array_intersect(explode(",", $style['border']), $border_allowed);
if (isset($style['border-style']) && in_array($style['border-style'], $border_style_allowed)) {
$border_value['style'] = $style['border-style'];
}
if (isset($style['border-color']) && is_string($style['border-color']) && $style['border-color'][0] == '#') {
$v = substr($style['border-color'], 1, 6);
$v = strlen($v) == 3 ? $v[0] . $v[0] . $v[1] . $v[1] . $v[2] . $v[2] : $v;// expand cf0 => ccff00
$border_value['color'] = "FF" . strtoupper($v);
}
$style_indexes[$i]['border_idx'] = self::add_to_list_get_index($borders, json_encode($border_value));
}
if (isset($style['fill']) && is_string($style['fill']) && $style['fill'][0] == '#') {
$v = substr($style['fill'], 1, 6);
$v = strlen($v) == 3 ? $v[0] . $v[0] . $v[1] . $v[1] . $v[2] . $v[2] : $v;// expand cf0 => ccff00
$style_indexes[$i]['fill_idx'] = self::add_to_list_get_index($fills, "FF" . strtoupper($v));
}
if (isset($style['halign']) && in_array($style['halign'], $horizontal_allowed)) {
$style_indexes[$i]['alignment'] = true;
$style_indexes[$i]['halign'] = $style['halign'];
}
if (isset($style['valign']) && in_array($style['valign'], $vertical_allowed)) {
$style_indexes[$i]['alignment'] = true;
$style_indexes[$i]['valign'] = $style['valign'];
}
if (isset($style['wrap_text'])) {
$style_indexes[$i]['alignment'] = true;
$style_indexes[$i]['wrap_text'] = (bool)$style['wrap_text'];
}
$font = $default_font;
if (isset($style['font-size'])) {
$font['size'] = floatval($style['font-size']);//floatval to allow "10.5" etc
}
if (isset($style['font']) && is_string($style['font'])) {
if ($style['font'] == 'Comic Sans MS') {
$font['family'] = 4;
}
if ($style['font'] == 'Times New Roman') {
$font['family'] = 1;
}
if ($style['font'] == 'Courier New') {
$font['family'] = 3;
}
$font['name'] = strval($style['font']);
}
if (isset($style['font-style']) && is_string($style['font-style'])) {
if (strpos($style['font-style'], 'bold') !== false) {
$font['bold'] = true;
}
if (strpos($style['font-style'], 'italic') !== false) {
$font['italic'] = true;
}
if (strpos($style['font-style'], 'strike') !== false) {
$font['strike'] = true;
}
if (strpos($style['font-style'], 'underline') !== false) {
$font['underline'] = true;
}
}
if (isset($style['color']) && is_string($style['color']) && $style['color'][0] == '#') {
$v = substr($style['color'], 1, 6);
$v = strlen($v) == 3 ? $v[0] . $v[0] . $v[1] . $v[1] . $v[2] . $v[2] : $v;// expand cf0 => ccff00
$font['color'] = "FF" . strtoupper($v);
}
if ($font != $default_font) {
$style_indexes[$i]['font_idx'] = self::add_to_list_get_index($fonts, json_encode($font));
}
}
return ['fills' => $fills, 'fonts' => $fonts, 'borders' => $borders, 'styles' => $style_indexes];
}
protected function writeStylesXML()
{
$r = $this->styleFontIndexes();
$fills = $r['fills'];
$fonts = $r['fonts'];
$borders = $r['borders'];
$style_indexes = $r['styles'];
$temporary_filename = $this->tempFilename();
$file = new XLSXWriter_BuffererWriter($temporary_filename);
$file->write('<?xml version="1.0" encoding="UTF-8" standalone="yes"?>' . "\n");
$file->write('<styleSheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main">');
$file->write('<numFmts count="' . count($this->number_formats) . '">');
foreach ($this->number_formats as $i => $v) {
$file->write('<numFmt numFmtId="' . (164 + $i) . '" formatCode="' . self::xmlspecialchars($v) . '" />');
}
//$file->write( '<numFmt formatCode="GENERAL" numFmtId="164"/>');
//$file->write( '<numFmt formatCode="[$$-1009]#,##0.00;[RED]\-[$$-1009]#,##0.00" numFmtId="165"/>');
//$file->write( '<numFmt formatCode="YYYY-MM-DD\ HH:MM:SS" numFmtId="166"/>');
//$file->write( '<numFmt formatCode="YYYY-MM-DD" numFmtId="167"/>');
$file->write('</numFmts>');
$file->write('<fonts count="' . (is_countable($fonts) ? count($fonts) : 0) . '">');
$file->write('<font><name val="Arial"/><charset val="1"/><family val="2"/><sz val="10"/></font>');
$file->write('<font><name val="Arial"/><family val="0"/><sz val="10"/></font>');
$file->write('<font><name val="Arial"/><family val="0"/><sz val="10"/></font>');
$file->write('<font><name val="Arial"/><family val="0"/><sz val="10"/></font>');
foreach ($fonts as $font) {
if (!empty($font)) { //fonts have 4 empty placeholders in array to offset the 4 static xml entries above
$f = json_decode($font, true, 512);
$file->write('<font>');
$file->write('<name val="' . htmlspecialchars($f['name']) . '"/><charset val="1"/><family val="' . intval($f['family']) . '"/>');
$file->write('<sz val="' . intval($f['size']) . '"/>');
if (!empty($f['color'])) {
$file->write('<color rgb="' . strval($f['color']) . '"/>');
}
if (!empty($f['bold'])) {
$file->write('<b val="true"/>');
}
if (!empty($f['italic'])) {
$file->write('<i val="true"/>');
}
if (!empty($f['underline'])) {
$file->write('<u val="single"/>');
}
if (!empty($f['strike'])) {
$file->write('<strike val="true"/>');
}
$file->write('</font>');
}
}
$file->write('</fonts>');
$file->write('<fills count="' . (is_countable($fills) ? count($fills) : 0) . '">');
$file->write('<fill><patternFill patternType="none"/></fill>');
$file->write('<fill><patternFill patternType="gray125"/></fill>');
foreach ($fills as $fill) {
if (!empty($fill)) { //fills have 2 empty placeholders in array to offset the 2 static xml entries above
$file->write('<fill><patternFill patternType="solid"><fgColor rgb="' . strval($fill) . '"/><bgColor indexed="64"/></patternFill></fill>');
}
}
$file->write('</fills>');
$file->write('<borders count="' . (is_countable($borders) ? count($borders) : 0) . '">');
$file->write('<border diagonalDown="false" diagonalUp="false"><left/><right/><top/><bottom/><diagonal/></border>');
foreach ($borders as $border) {
if (!empty($border)) { //fonts have an empty placeholder in the array to offset the static xml entry above
$pieces = json_decode($border, true, 512);
$border_style = !empty($pieces['style']) ? $pieces['style'] : 'hair';
$border_color = !empty($pieces['color']) ? '<color rgb="' . strval($pieces['color']) . '"/>' : '';
$file->write('<border diagonalDown="false" diagonalUp="false">');
foreach (['left', 'right', 'top', 'bottom'] as $side) {
$show_side = in_array($side, $pieces['side']) ? true : false;
$file->write($show_side ? "<$side style=\"$border_style\">$border_color</$side>" : "<$side/>");
}
$file->write('<diagonal/>');
$file->write('</border>');
}
}
$file->write('</borders>');
$file->write('<cellStyleXfs count="20">');
$file->write('<xf applyAlignment="true" applyBorder="true" applyFont="true" applyProtection="true" borderId="0" fillId="0" fontId="0" numFmtId="164">');
$file->write('<alignment horizontal="general" indent="0" shrinkToFit="false" textRotation="0" vertical="bottom" wrapText="false"/>');
$file->write('<protection hidden="false" locked="true"/>');
$file->write('</xf>');
$file->write('<xf applyAlignment="false" applyBorder="false" applyFont="true" applyProtection="false" borderId="0" fillId="0" fontId="1" numFmtId="0"/>');
$file->write('<xf applyAlignment="false" applyBorder="false" applyFont="true" applyProtection="false" borderId="0" fillId="0" fontId="1" numFmtId="0"/>');
$file->write('<xf applyAlignment="false" applyBorder="false" applyFont="true" applyProtection="false" borderId="0" fillId="0" fontId="2" numFmtId="0"/>');
$file->write('<xf applyAlignment="false" applyBorder="false" applyFont="true" applyProtection="false" borderId="0" fillId="0" fontId="2" numFmtId="0"/>');
$file->write('<xf applyAlignment="false" applyBorder="false" applyFont="true" applyProtection="false" borderId="0" fillId="0" fontId="0" numFmtId="0"/>');
$file->write('<xf applyAlignment="false" applyBorder="false" applyFont="true" applyProtection="false" borderId="0" fillId="0" fontId="0" numFmtId="0"/>');
$file->write('<xf applyAlignment="false" applyBorder="false" applyFont="true" applyProtection="false" borderId="0" fillId="0" fontId="0" numFmtId="0"/>');
$file->write('<xf applyAlignment="false" applyBorder="false" applyFont="true" applyProtection="false" borderId="0" fillId="0" fontId="0" numFmtId="0"/>');
$file->write('<xf applyAlignment="false" applyBorder="false" applyFont="true" applyProtection="false" borderId="0" fillId="0" fontId="0" numFmtId="0"/>');
$file->write('<xf applyAlignment="false" applyBorder="false" applyFont="true" applyProtection="false" borderId="0" fillId="0" fontId="0" numFmtId="0"/>');
$file->write('<xf applyAlignment="false" applyBorder="false" applyFont="true" applyProtection="false" borderId="0" fillId="0" fontId="0" numFmtId="0"/>');
$file->write('<xf applyAlignment="false" applyBorder="false" applyFont="true" applyProtection="false" borderId="0" fillId="0" fontId="0" numFmtId="0"/>');
$file->write('<xf applyAlignment="false" applyBorder="false" applyFont="true" applyProtection="false" borderId="0" fillId="0" fontId="0" numFmtId="0"/>');
$file->write('<xf applyAlignment="false" applyBorder="false" applyFont="true" applyProtection="false" borderId="0" fillId="0" fontId="0" numFmtId="0"/>');
$file->write('<xf applyAlignment="false" applyBorder="false" applyFont="true" applyProtection="false" borderId="0" fillId="0" fontId="1" numFmtId="43"/>');
$file->write('<xf applyAlignment="false" applyBorder="false" applyFont="true" applyProtection="false" borderId="0" fillId="0" fontId="1" numFmtId="41"/>');
$file->write('<xf applyAlignment="false" applyBorder="false" applyFont="true" applyProtection="false" borderId="0" fillId="0" fontId="1" numFmtId="44"/>');
$file->write('<xf applyAlignment="false" applyBorder="false" applyFont="true" applyProtection="false" borderId="0" fillId="0" fontId="1" numFmtId="42"/>');
$file->write('<xf applyAlignment="false" applyBorder="false" applyFont="true" applyProtection="false" borderId="0" fillId="0" fontId="1" numFmtId="9"/>');
$file->write('</cellStyleXfs>');
$file->write('<cellXfs count="' . (is_countable($style_indexes) ? count($style_indexes) : 0) . '">');
//$file->write( '<xf applyAlignment="false" applyBorder="false" applyFont="false" applyProtection="false" borderId="0" fillId="0" fontId="0" numFmtId="164" xfId="0"/>');
//$file->write( '<xf applyAlignment="false" applyBorder="false" applyFont="false" applyProtection="false" borderId="0" fillId="0" fontId="0" numFmtId="165" xfId="0"/>');
//$file->write( '<xf applyAlignment="false" applyBorder="false" applyFont="false" applyProtection="false" borderId="0" fillId="0" fontId="0" numFmtId="166" xfId="0"/>');
//$file->write( '<xf applyAlignment="false" applyBorder="false" applyFont="false" applyProtection="false" borderId="0" fillId="0" fontId="0" numFmtId="167" xfId="0"/>');
foreach ($style_indexes as $v) {
$applyAlignment = isset($v['alignment']) ? 'true' : 'false';
$wrapText = !empty($v['wrap_text']) ? 'true' : 'false';
$horizAlignment = $v['halign'] ?? 'general';
$vertAlignment = $v['valign'] ?? 'bottom';
$applyBorder = isset($v['border_idx']) ? 'true' : 'false';
$applyFont = 'true';
$borderIdx = isset($v['border_idx']) ? intval($v['border_idx']) : 0;
$fillIdx = isset($v['fill_idx']) ? intval($v['fill_idx']) : 0;
$fontIdx = isset($v['font_idx']) ? intval($v['font_idx']) : 0;
//$file->write('<xf applyAlignment="'.$applyAlignment.'" applyBorder="'.$applyBorder.'" applyFont="'.$applyFont.'" applyProtection="false" borderId="'.($borderIdx).'" fillId="'.($fillIdx).'" fontId="'.($fontIdx).'" numFmtId="'.(164+$v['num_fmt_idx']).'" xfId="0"/>');
$file->write('<xf applyAlignment="' . $applyAlignment . '" applyBorder="' . $applyBorder . '" applyFont="' . $applyFont . '" applyProtection="false" borderId="' . ($borderIdx) . '" fillId="' . ($fillIdx) . '" fontId="' . ($fontIdx) . '" numFmtId="' . (164 + $v['num_fmt_idx']) . '" xfId="0">');
$file->write(' <alignment horizontal="' . $horizAlignment . '" vertical="' . $vertAlignment . '" textRotation="0" wrapText="' . $wrapText . '" indent="0" shrinkToFit="false"/>');
$file->write(' <protection locked="true" hidden="false"/>');
$file->write('</xf>');
}
$file->write('</cellXfs>');
$file->write('<cellStyles count="6">');
$file->write('<cellStyle builtinId="0" customBuiltin="false" name="Normal" xfId="0"/>');
$file->write('<cellStyle builtinId="3" customBuiltin="false" name="Comma" xfId="15"/>');
$file->write('<cellStyle builtinId="6" customBuiltin="false" name="Comma [0]" xfId="16"/>');
$file->write('<cellStyle builtinId="4" customBuiltin="false" name="Currency" xfId="17"/>');
$file->write('<cellStyle builtinId="7" customBuiltin="false" name="Currency [0]" xfId="18"/>');
$file->write('<cellStyle builtinId="5" customBuiltin="false" name="Percent" xfId="19"/>');
$file->write('</cellStyles>');
$file->write('</styleSheet>');
$file->close();
return $temporary_filename;
}
protected function buildAppXML()
{
$app_xml = "";
$app_xml .= '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>' . "\n";
$app_xml .= '<Properties xmlns="http://schemas.openxmlformats.org/officeDocument/2006/extended-properties" xmlns:vt="http://schemas.openxmlformats.org/officeDocument/2006/docPropsVTypes">';
$app_xml .= '<TotalTime>0</TotalTime>';
$app_xml .= '<Company>' . self::xmlspecialchars($this->company) . '</Company>';
$app_xml .= '</Properties>';
return $app_xml;
}
protected function buildCoreXML()
{
$core_xml = "";
$core_xml .= '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>' . "\n";
$core_xml .= '<cp:coreProperties xmlns:cp="http://schemas.openxmlformats.org/package/2006/metadata/core-properties" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcmitype="http://purl.org/dc/dcmitype/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">';
$core_xml .= '<dcterms:created xsi:type="dcterms:W3CDTF">' . date("Y-m-d\TH:i:s.00\Z") . '</dcterms:created>';//$date_time = '2014-10-25T15:54:37.00Z';
$core_xml .= '<dc:title>' . self::xmlspecialchars($this->title) . '</dc:title>';
$core_xml .= '<dc:subject>' . self::xmlspecialchars($this->subject) . '</dc:subject>';
$core_xml .= '<dc:creator>' . self::xmlspecialchars($this->author) . '</dc:creator>';
if (!empty($this->keywords)) {
$core_xml .= '<cp:keywords>' . self::xmlspecialchars(implode(
", ",
(array)$this->keywords
)) . '</cp:keywords>';
}
$core_xml .= '<dc:description>' . self::xmlspecialchars($this->description) . '</dc:description>';
$core_xml .= '<cp:revision>0</cp:revision>';
$core_xml .= '</cp:coreProperties>';
return $core_xml;
}
protected function buildRelationshipsXML()
{
$rels_xml = "";
$rels_xml .= '<?xml version="1.0" encoding="UTF-8"?>' . "\n";
$rels_xml .= '<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">';
$rels_xml .= '<Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument" Target="xl/workbook.xml"/>';
$rels_xml .= '<Relationship Id="rId2" Type="http://schemas.openxmlformats.org/package/2006/relationships/metadata/core-properties" Target="docProps/core.xml"/>';
$rels_xml .= '<Relationship Id="rId3" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/extended-properties" Target="docProps/app.xml"/>';
$rels_xml .= "\n";
$rels_xml .= '</Relationships>';
return $rels_xml;
}
protected function buildWorkbookXML()
{
$i = 0;
$workbook_xml = "";
$workbook_xml .= '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>' . "\n";
$workbook_xml .= '<workbook xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships">';
$workbook_xml .= '<fileVersion appName="Calc"/><workbookPr backupFile="false" showObjects="all" date1904="false"/><workbookProtection/>';
$workbook_xml .= '<bookViews><workbookView activeTab="0" firstSheet="0" showHorizontalScroll="true" showSheetTabs="true" showVerticalScroll="true" tabRatio="212" windowHeight="8192" windowWidth="16384" xWindow="0" yWindow="0"/></bookViews>';
$workbook_xml .= '<sheets>';
foreach ($this->sheets as $sheet_name => $sheet) {
$sheetname = self::sanitize_sheetname($sheet->sheetname);
$workbook_xml .= '<sheet name="' . self::xmlspecialchars($sheetname) . '" sheetId="' . ($i + 1) . '" state="visible" r:id="rId' . ($i + 2) . '"/>';
$i++;
}
$workbook_xml .= '</sheets>';
$workbook_xml .= '<definedNames>';
foreach ($this->sheets as $sheet_name => $sheet) {
if ($sheet->auto_filter) {
$sheetname = self::sanitize_sheetname($sheet->sheetname);
$workbook_xml .= '<definedName name="_xlnm._FilterDatabase" localSheetId="0" hidden="1">\'' . self::xmlspecialchars($sheetname) . '\'!$A$1:' . self::xlsCell(
$sheet->row_count - 1,
(is_countable($sheet->columns) ? count($sheet->columns) : 0) - 1,
true
) . '</definedName>';
$i++;
}
}
$workbook_xml .= '</definedNames>';
$workbook_xml .= '<calcPr iterateCount="100" refMode="A1" iterate="false" iterateDelta="0.001"/></workbook>';
return $workbook_xml;
}
protected function buildWorkbookRelsXML()
{
$i = 0;
$wkbkrels_xml = "";
$wkbkrels_xml .= '<?xml version="1.0" encoding="UTF-8"?>' . "\n";
$wkbkrels_xml .= '<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">';
$wkbkrels_xml .= '<Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/styles" Target="styles.xml"/>';
foreach ($this->sheets as $sheet_name => $sheet) {
$wkbkrels_xml .= '<Relationship Id="rId' . ($i + 2) . '" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/worksheet" Target="worksheets/' . ($sheet->xmlname) . '"/>';
$i++;
}
$wkbkrels_xml .= "\n";
$wkbkrels_xml .= '</Relationships>';
return $wkbkrels_xml;
}
protected function buildContentTypesXML()
{
$content_types_xml = "";
$content_types_xml .= '<?xml version="1.0" encoding="UTF-8"?>' . "\n";
$content_types_xml .= '<Types xmlns="http://schemas.openxmlformats.org/package/2006/content-types">';
$content_types_xml .= '<Override PartName="/_rels/.rels" ContentType="application/vnd.openxmlformats-package.relationships+xml"/>';
$content_types_xml .= '<Override PartName="/xl/_rels/workbook.xml.rels" ContentType="application/vnd.openxmlformats-package.relationships+xml"/>';
foreach ($this->sheets as $sheet_name => $sheet) {
$content_types_xml .= '<Override PartName="/xl/worksheets/' . ($sheet->xmlname) . '" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml"/>';
}
$content_types_xml .= '<Override PartName="/xl/workbook.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet.main+xml"/>';
$content_types_xml .= '<Override PartName="/xl/styles.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.styles+xml"/>';
$content_types_xml .= '<Override PartName="/docProps/app.xml" ContentType="application/vnd.openxmlformats-officedocument.extended-properties+xml"/>';
$content_types_xml .= '<Override PartName="/docProps/core.xml" ContentType="application/vnd.openxmlformats-package.core-properties+xml"/>';
$content_types_xml .= "\n";
$content_types_xml .= '</Types>';
return $content_types_xml;
}
//------------------------------------------------------------------
/*
* @param $row_number int, zero based
* @param $column_number int, zero based
* @param $absolute bool
* @return Cell label/coordinates, ex: A1, C3, AA42 (or if $absolute==true: $A$1, $C$3, $AA$42)
* */
public static function xlsCell($row_number, $column_number, $absolute = false)
{
$n = $column_number;
for ($r = ""; $n >= 0; $n = intval($n / 26) - 1) {
$r = chr($n % 26 + 0x41) . $r;
}
if ($absolute) {
return '$' . $r . '$' . ($row_number + 1);
}
return $r . ($row_number + 1);
}
//------------------------------------------------------------------
public static function log($string)
{
file_put_contents(
"php://stderr",
date("Y-m-d H:i:s:") . rtrim(is_array($string) ? json_encode($string) : $string) . "\n"
);
}
//------------------------------------------------------------------
public static function sanitize_filename(
$filename
) { //https://msdn.microsoft.com/en-us/library/aa365247%28VS.85%29.aspx
$nonprinting = array_map('chr', range(0, 31));
$invalid_chars = ['<', '>', '?', '"', ':', '|', '\\', '/', '*', '&'];
$all_invalids = array_merge($nonprinting, $invalid_chars);
return str_replace($all_invalids, "", $filename);
}
//------------------------------------------------------------------
public static function sanitize_sheetname($sheetname)
{
static $badchars = '\\/?*:[]';
static $goodchars = ' ';
$sheetname = strtr($sheetname, $badchars, $goodchars);
$sheetname = substr($sheetname, 0, 31);
$sheetname = trim(trim(trim($sheetname), "'"));//trim before and after trimming single quotes
return !empty($sheetname) ? $sheetname : 'Sheet' . ((random_int(0, mt_getrandmax()) % 900) + 100);
}
//------------------------------------------------------------------
public static function xmlspecialchars($val)
{
//note, badchars does not include \t\n\r (\x09\x0a\x0d)
static $badchars = "\x00\x01\x02\x03\x04\x05\x06\x07\x08\x0b\x0c\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f\x7f";
static $goodchars = " ";
return strtr(
htmlspecialchars((string) $val, ENT_QUOTES | ENT_XML1),
$badchars,
$goodchars
);//strtr appears to be faster than str_replace
}
//------------------------------------------------------------------
public static function array_first_key(array $arr)
{
$first_key = array_key_first($arr);
return $first_key;
}
//------------------------------------------------------------------
private static function determineNumberFormatType($num_format)
{
$num_format = preg_replace("/\[(Black|Blue|Cyan|Green|Magenta|Red|White|Yellow)\]/i", "", $num_format);
if ($num_format == 'GENERAL') {
return 'n_auto';
}
if ($num_format == '@') {
return 'n_string';
}
if ($num_format == '0') {
return 'n_numeric';
}
if (preg_match("/[H]{1,2}:[M]{1,2}/i", $num_format)) {
return 'n_datetime';
}
if (preg_match("/[M]{1,2}:[S]{1,2}/i", $num_format)) {
return 'n_datetime';
}
if (preg_match("/[Y]{2,4}/i", $num_format)) {
return 'n_date';
}
if (preg_match("/[D]{1,2}/i", $num_format)) {
return 'n_date';
}
if (preg_match("/[M]{1,2}/i", $num_format)) {
return 'n_date';
}
if (preg_match("/$/", $num_format)) {
return 'n_numeric';
}
if (preg_match("/%/", $num_format)) {
return 'n_numeric';
}
if (preg_match("/0/", $num_format)) {
return 'n_numeric';
}
return 'n_auto';
}
//------------------------------------------------------------------
private static function numberFormatStandardized($num_format)
{
if ($num_format == 'money') {
$num_format = 'dollar';
}
if ($num_format == 'number') {
$num_format = 'integer';
}
if ($num_format == 'string') {
$num_format = '@';
} else {
if ($num_format == 'integer') {
$num_format = '0';
} else {
if ($num_format == 'date') {
$num_format = 'YYYY-MM-DD';
} else {
if ($num_format == 'datetime') {
$num_format = 'YYYY-MM-DD HH:MM:SS';
} else {
if ($num_format == 'price') {
$num_format = '#,##0.00';
} else {
if ($num_format == 'dollar') {
$num_format = '[$$-1009]#,##0.00;[RED]-[$$-1009]#,##0.00';
} else {
if ($num_format == 'euro') {
$num_format = '#,##0.00 [$€-407];[RED]-#,##0.00 [$€-407]';
}
}
}
}
}
}
}
$ignore_until = '';
$escaped = '';
for ($i = 0, $ix = strlen($num_format); $i < $ix; $i++) {
$c = $num_format[$i];
if ($ignore_until == '' && $c == '[') {
$ignore_until = ']';
} else {
if ($ignore_until == '' && $c == '"') {
$ignore_until = '"';
} else {
if ($ignore_until == $c) {
$ignore_until = '';
}
}
}
if ($ignore_until == '' && ($c == ' ' || $c == '-' || $c == '(' || $c == ')') && ($i == 0 || $num_format[$i - 1] != '_')) {
$escaped .= "\\" . $c;
} else {
$escaped .= $c;
}
}
return $escaped;
}
//------------------------------------------------------------------
public static function add_to_list_get_index(&$haystack, $needle)
{
$existing_idx = array_search($needle, $haystack, $strict = true);
if ($existing_idx === false) {
$existing_idx = is_countable($haystack) ? count($haystack) : 0;
$haystack[] = $needle;
}
return $existing_idx;
}
//------------------------------------------------------------------
public static function convert_date_time($date_input) //thanks to Excel::Writer::XLSX::Worksheet.pm (perl)
{
$days = 0; # Number of days since epoch
$seconds = 0; # Time expressed as fraction of 24h hours in seconds
$year = $month = $day = 0;
$hour = $min = $sec = 0;
$date_time = $date_input;
if (preg_match("/(\d{4})\-(\d{2})\-(\d{2})/", $date_time, $matches)) {
[$junk, $year, $month, $day] = $matches;
}
if (preg_match("/(\d+):(\d{2}):(\d{2})/", $date_time, $matches)) {
[$junk, $hour, $min, $sec] = $matches;
$seconds = ($hour * 60 * 60 + $min * 60 + $sec) / (24 * 60 * 60);
}
//using 1900 as epoch, not 1904, ignoring 1904 special case
# Special cases for Excel.
if ("$year-$month-$day" == '1899-12-31') {
return $seconds;
} # Excel 1900 epoch
if ("$year-$month-$day" == '1900-01-00') {
return $seconds;
} # Excel 1900 epoch
if ("$year-$month-$day" == '1900-02-29') {
return 60 + $seconds;
} # Excel false leapday
# We calculate the date by calculating the number of days since the epoch
# and adjust for the number of leap days. We calculate the number of leap
# days by normalising the year in relation to the epoch. Thus the year 2000
# becomes 100 for 4 and 100 year leapdays and 400 for 400 year leapdays.
$epoch = 1900;
$offset = 0;
$norm = 300;
$range = $year - $epoch;
# Set month days and check for leap year.
$leap = (($year % 400 == 0) || (($year % 4 == 0) && ($year % 100))) ? 1 : 0;
$mdays = [31, ($leap ? 29 : 28), 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
# Some boundary checks
if ($year < $epoch || $year > 9999) {
return 0;
}
if ($month < 1 || $month > 12) {
return 0;
}
if ($day < 1 || $day > $mdays[$month - 1]) {
return 0;
}
# Accumulate the number of days since the epoch.
$days = $day; # Add days for current month
$days += array_sum(array_slice($mdays, 0, $month - 1)); # Add days for past months
$days += $range * 365; # Add days for past years
$days += intval(($range) / 4); # Add leapdays
$days -= intval(($range + $offset) / 100); # Subtract 100 year leapdays
$days += intval(($range + $offset + $norm) / 400); # Add 400 year leapdays
$days -= $leap; # Already counted above
# Adjust for Excel erroneously treating 1900 as a leap year.
if ($days > 59) {
$days++;
}
return $days + $seconds;
}
//------------------------------------------------------------------
}
class XLSXWriter_BuffererWriter
{
protected $fd = null;
protected $buffer = '';
protected $check_utf8 = false;
public function __construct($filename, $fd_fopen_flags = 'w', $check_utf8 = false)
{
$this->check_utf8 = $check_utf8;
$this->fd = fopen($filename, $fd_fopen_flags);
if ($this->fd === false) {
XLSXWriter::log("Unable to open $filename for writing.");
}
}
public function write($string)
{
$this->buffer .= $string;
if (isset($this->buffer[8191])) {
$this->purge();
}
}
protected function purge()
{
if ($this->fd) {
if ($this->check_utf8 && !self::isValidUTF8($this->buffer)) {
XLSXWriter::log("Error, invalid UTF8 encoding detected.");
$this->check_utf8 = false;
}
fwrite($this->fd, $this->buffer);
$this->buffer = '';
}
}
public function close()
{
$this->purge();
if ($this->fd) {
fclose($this->fd);
$this->fd = null;
}
}
public function __destruct()
{
$this->close();
}
public function ftell()
{
if ($this->fd) {
$this->purge();
return ftell($this->fd);
}
return -1;
}
public function fseek($pos)
{
if ($this->fd) {
$this->purge();
return fseek($this->fd, $pos);
}
return -1;
}
protected static function isValidUTF8($string)
{
if (function_exists('mb_check_encoding')) {
return mb_check_encoding($string, 'UTF-8') ? true : false;
}
return preg_match("//u", $string) ? true : false;
}
}