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steven
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324
setup/src/SimpleExcel/Parser/XMLParser.php
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324
setup/src/SimpleExcel/Parser/XMLParser.php
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<?php
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namespace SimpleExcel\Parser;
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use SimpleExcel\Exception\SimpleExcelException;
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/**
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* SimpleExcel class for parsing Microsoft Excel 2003 XML Spreadsheet
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*
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* @author Faisalman
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* @package SimpleExcel
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*/
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class XMLParser extends BaseParser implements IParser
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{
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/**
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* Defines valid file extension
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*
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* @access protected
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* @var string
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*/
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protected $file_extension = 'xml';
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/**
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* Extract attributes from SimpleXMLElement object
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*
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* @access private
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* @param object $attrs_obj
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* @return array
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*/
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private function getAttributes($attrs_obj) {
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$attrs_arr = array();
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if (!$attrs_obj) {
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return $attrs_arr;
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}
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foreach ($attrs_obj as $attrs) {
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$attrs = (array) $attrs;
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foreach ($attrs as $attr) {
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$attr_keys = array_keys($attr);
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$attrs_arr[$attr_keys[0]] = $attr[$attr_keys[0]];
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}
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}
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return $attrs_arr;
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}
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/**
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* Get value of the specified cell
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*
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* @param int $row_num Row number
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* @param int $col_num Column number
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* @param int $val_only Whether returns only it's value or complete data
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* @return array
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* @throws Exception If the cell identified doesn't exist.
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*/
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public function getCell($row_num, $col_num, $val_only = true) {
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// check whether the cell exists
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if (!$this->isCellExists($row_num, $col_num)) {
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throw new \Exception('Cell '.$row_num.','.$col_num.' doesn\'t exist', SimpleExcelException::CELL_NOT_FOUND);
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}
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if(is_array($this->table_arr['table_contents'][$row_num-1]['row_contents'])){
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if(array_key_exists($col_num-1, $this->table_arr['table_contents'][$row_num-1]['row_contents'])){
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$cell = $this->table_arr['table_contents'][$row_num-1]['row_contents'][$col_num-1];
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if(!$val_only){
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return $cell;
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} else {
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return $cell['value'];
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}
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}
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}
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return "";
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}
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/**
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* Get data of the specified column as an array
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*
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* @param int $col_num Column number
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* @param bool $val_only Returns (value only | complete data) for every cell, default to TRUE
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* @return array
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* @throws Exception If the column requested doesn't exist.
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*/
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public function getColumn($col_num, $val_only = TRUE) {
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$col_arr = array();
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if (!$this->isColumnExists($col_num)) {
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throw new \Exception('Column '.$col_num.' doesn\'t exist', SimpleExcelException::COLUMN_NOT_FOUND);
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}
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// get the specified column within every row
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foreach ($this->table_arr['table_contents'] as $row) {
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if ($row['row_contents']) {
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if(!$val_only) {
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array_push($col_arr, $row['row_contents'][$col_num-1]);
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} else {
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array_push($col_arr, $row['row_contents'][$col_num-1]['value']);
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}
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} else {
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array_push($col_arr, "");
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}
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}
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// return the array
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return $col_arr;
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}
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/**
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* Get data of all cells as an array
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*
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* @param bool $val_only Returns (value only | complete data) for every cell, default to TRUE
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* @return array
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* @throws Exception If the field is not set.
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*/
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public function getField($val_only = TRUE) {
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if (!$this->isFieldExists()) {
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throw new \Exception('Field is not set', SimpleExcelException::FIELD_NOT_FOUND);
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}
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if($val_only){
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$field = array();
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foreach($this->table_arr['table_contents'] as $row){
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$cells = array();
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if($row['row_contents']){
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foreach($row['row_contents'] as $cell){
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array_push($cells, $cell['value']);
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}
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}
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array_push($field, $cells);
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}
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return $field;
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} else {
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return $this->table_arr;
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}
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}
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/**
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* Get data of the specified row as an array
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*
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* @param int $row_num Row number
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* @param bool $val_only Returns (value only | complete data) for every cell, default to TRUE
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* @return array
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* @throws Exception When a row is requested that doesn't exist.
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*/
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public function getRow($row_num, $val_only = TRUE) {
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if (!$this->isRowExists($row_num)) {
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throw new \Exception('Row '.$row_num.' doesn\'t exist', SimpleExcelException::ROW_NOT_FOUND);
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}
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$row = $this->table_arr['table_contents'][$row_num-1]['row_contents'];
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$row_arr = array();
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// get the specified column within every row
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foreach ($row as $cell) {
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if (!$val_only) {
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array_push($row_arr, $cell);
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} else {
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array_push($row_arr, $cell['value']);
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}
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}
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// return the array, if empty then return FALSE
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return $row_arr;
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}
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/**
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* Check whether a specified column exists
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*
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* @param int $col_num Column number
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* @return bool
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*/
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public function isColumnExists($col_num){
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$exist = false;
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foreach($this->table_arr['table_contents'] as $row){
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if(is_array($row['row_contents'])){
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if(array_key_exists($col_num-1, $row['row_contents'])){
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$exist = true;
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}
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}
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}
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return $exist;
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}
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/**
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* Check whether a specified row exists
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*
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* @param int $row_num Row number
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* @return bool
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*/
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public function isRowExists($row_num){
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return array_key_exists($row_num-1, $this->table_arr['table_contents']);
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}
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/**
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* Process the loaded file/string
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*
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* @param SimpleXMLElement $xml SimpleXMLElement object of XML
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* @throws Exception If document namespace invalid
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* @return bool
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*/
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private function parseDOM($xml){
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// get XML namespace
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$xmlns = $xml->getDocNamespaces();
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// check file extension and XML namespace
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if ($xmlns['ss'] != 'urn:schemas-microsoft-com:office:spreadsheet') {
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throw new \Exception('Document namespace isn\'t a valid Excel XML 2003 Spreadsheet', SimpleExcelException::INVALID_DOCUMENT_NAMESPACE);
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}
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// extract document properties
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$doc_props = (array)$xml->DocumentProperties;
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$this->table_arr['doc_props'] = $doc_props;
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$rows = $xml->Worksheet->Table->Row;
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$row_num = 1;
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$this->table_arr = array(
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'doc_props' => array(),
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'table_contents' => array()
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);
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// loop through all rows
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foreach ($rows as $row) {
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// check whether ss:Index attribute exist in this row
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$row_index = $row->xpath('@ss:Index');
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// if exist, push empty value until the specified index
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if (count($row_index) > 0) {
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$gap = $row_index[0]-count($this->table_arr['table_contents']);
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for($i = 1; $i < $gap; $i++){
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array_push($this->table_arr['table_contents'], array(
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'row_num' => $row_num,
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'row_contents' => '',
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//'row_attrs' => $row_attrs_arr
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));
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$row_num += 1;
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}
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}
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$cells = $row->Cell;
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$row_attrs = $row->xpath('@ss:*');
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$row_attrs_arr = $this->getAttributes($row_attrs);
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$row_arr = array();
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$col_num = 1;
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// loop through all row's cells
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foreach ($cells as $cell) {
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// check whether ss:Index attribute exist
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$cell_index = $cell->xpath('@ss:Index');
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// if exist, push empty value until the specified index
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if (count($cell_index) > 0) {
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$gap = $cell_index[0]-count($row_arr);
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for ($i = 1; $i < $gap; $i++) {
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array_push ($row_arr, array(
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'row_num' => $row_num,
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'col_num' => $col_num,
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'datatype' => '',
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'value' => '',
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//'cell_attrs' => '',
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//'data_attrs' => ''
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));
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$col_num += 1;
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}
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}
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// get all cell and data attributes
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//$cell_attrs = $cell->xpath('@ss:*');
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//$cell_attrs_arr = $this->getAttributes($cell_attrs);
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$data_attrs = $cell->Data->xpath('@ss:*');
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$data_attrs_arr = $this->getAttributes($data_attrs);
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$cell_datatype = isset($data_attrs_arr['Type']) ? $data_attrs_arr['Type'] : 'String';
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// extract data from cell
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$cell_value = (string) $cell->Data;
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// escape input from HTML tags
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$cell_value = filter_var($cell_value, FILTER_SANITIZE_SPECIAL_CHARS);
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// push column array
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array_push($row_arr, array(
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'row_num' => $row_num,
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'col_num' => $col_num,
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'datatype' => $cell_datatype,
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'value' => $cell_value,
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//'cell_attrs' => $cell_attrs_arr,
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//'data_attrs' => $data_attrs_arr
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));
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$col_num += 1;
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}
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// push row array
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array_push($this->table_arr['table_contents'], array(
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'row_num' => $row_num,
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'row_contents' => $row_arr,
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//'row_attrs' => $row_attrs_arr
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));
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$row_num += 1;
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}
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return true;
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}
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/**
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* Load the XML file to be parsed
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*
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* @param string $file_path Path to XML file
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* @return bool
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*/
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public function loadFile($file_path) {
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if (!$this->isFileReady($file_path)) {
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return false;
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}
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return $this->parseDOM(simplexml_load_file($file_path));
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}
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/**
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* Load the string to be parsed
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*
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* @param string $str String with XML format
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* @return bool
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*/
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public function loadString($str){
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return $this->parseDOM(simplexml_load_string($str));
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}
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}
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