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							269 lines
						
					
					
						
							9.5 KiB
						
					
					
				
			
		
		
	
	
							269 lines
						
					
					
						
							9.5 KiB
						
					
					
				<?php
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/* See license terms in /license.txt */
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/**
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 *  This is the export library for Chamilo.
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 *	Include/require it in your code to use its functionality.
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 *	Several functions below are adaptations from functions distributed by www.nexen.net
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 *
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 *  @package chamilo.library
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 */
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class Export
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{
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	private function __construct()
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    {
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	}
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    /**
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    *
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    * @deprecated use export_table_csv_utf8 instead
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    */
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    public static function export_table_csv ($data, $filename = 'export')
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    {
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        $file = api_get_path(SYS_ARCHIVE_PATH).uniqid('').'.csv';
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        $handle = @fopen($file, 'a+');
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        if (is_array($data)) {
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            foreach ($data as $index => $row) {
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                $line = '';
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                if (is_array($row)) {
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                    foreach ($row as $value) {
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                        $line .= '"'.str_replace('"', '""', $value).'";';
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                    }
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                }
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                @fwrite($handle, $line."\n");
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            }
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        }
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        @fclose($handle);
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        DocumentManager :: file_send_for_download($file, true, $filename.'.csv');
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        return false;
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    }
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	/**
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	 * Export tabular data to CSV-file
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	 * @param array $data
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	 * @param string $filename
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	 */
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	public static function export_table_csv_utf8($data, $filename = 'export')
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    {
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        if(empty($data)) {
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            return false;
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        }
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        $path = Chamilo::temp_file();
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        $converter = new Utf8Encoder(null, true);
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        $file = FileWriter::create($path, $converter);
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        $file = CsvWriter::create($file);
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        foreach ($data as $row) {
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            $file->put($row);
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        }
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		$file->close();
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		DocumentManager::file_send_for_download($path, false, $filename.'.csv');
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        unlink($path);
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        exit;
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	}
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    /**
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     * Export tabular data to XLS-file
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     * @param array $data
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     * @param string $filename
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     */
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    public static function export_table_xls($data, $filename = 'export', $encoding = 'utf-8')
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    {
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        $file = api_get_path(SYS_ARCHIVE_PATH).uniqid('').'.xls';
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        $handle = fopen($file, 'a+');
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        $systemEncoding = api_get_system_encoding();
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        foreach ($data as $row) {
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            $string = implode("\t", $row);
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            if ($encoding != 'utf-8') {
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                $string = api_convert_encoding($string, $encoding, $systemEncoding);
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            }
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            fwrite($handle, $string."\n");
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        }
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        fclose($handle);
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        DocumentManager::file_send_for_download($file, false, $filename.'.xls');
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	}
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    /**
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     * Export tabular data to XLS-file (as html table)
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     * @param array $data
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     * @param string $filename
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     */
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    public static function export_table_xls_html($data, $filename = 'export', $encoding = 'utf-8')
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    {
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        $file = api_get_path(SYS_ARCHIVE_PATH).uniqid('').'.xls';
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        $handle = fopen($file, 'a+');
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        $systemEncoding = api_get_system_encoding();
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        fwrite($handle, '<!DOCTYPE html><html><meta http-equiv="Content-Type" content="text/html" charset="utf-8" /><body><table>');
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        foreach ($data as $id => $row) {
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            foreach ($row as $id2 => $row2) {
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                $data[$id][$id2] = api_htmlentities($row2);
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            }
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        }
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        foreach ($data as $row) {
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            $string = implode("</td><td>", $row);
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            $string = '<tr><td>' . $string . '</td></tr>';
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            if ($encoding != 'utf-8') {
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                $string = api_convert_encoding($string, $encoding, $systemEncoding);
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            }
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            fwrite($handle, $string."\n");
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        }
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        fwrite($handle, '</table></body></html>');
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        fclose($handle);
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        DocumentManager::file_send_for_download($file, false, $filename.'.xls');
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    }
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    /**
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    * Export tabular data to XML-file
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    * @param array  Simple array of data to put in XML
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    * @param string Name of file to be given to the user
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    * @param string Name of common tag to place each line in
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    * @param string Name of the root element. A root element should always be given.
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    * @param string Encoding in which the data is provided
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    */
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	public static function export_table_xml($data, $filename = 'export', $item_tagname = 'item', $wrapper_tagname = null, $encoding = null)
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    {
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		if (empty($encoding)) {
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			$encoding = api_get_system_encoding();
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		}
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		$file = api_get_path(SYS_ARCHIVE_PATH).'/'.uniqid('').'.xml';
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		$handle = fopen($file, 'a+');
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		fwrite($handle, '<?xml version="1.0" encoding="'.$encoding.'"?>'."\n");
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		if (!is_null($wrapper_tagname)) {
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			fwrite($handle, "\t".'<'.$wrapper_tagname.'>'."\n");
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		}
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		foreach ($data as $row) {
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			fwrite($handle, '<'.$item_tagname.'>'."\n");
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			foreach ($row as $key => $value) {
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				fwrite($handle, "\t\t".'<'.$key.'>'.$value.'</'.$key.'>'."\n");
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			}
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			fwrite($handle, "\t".'</'.$item_tagname.'>'."\n");
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		}
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		if (!is_null($wrapper_tagname)) {
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			fwrite($handle, '</'.$wrapper_tagname.'>'."\n");
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		}
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		fclose($handle);
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		DocumentManager :: file_send_for_download($file, true, $filename.'.xml');
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		return false;
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	}
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    /**
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     * Export hierarchical tabular data to XML-file
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     * @param array  Hierarchical array of data to put in XML, each element presenting a 'name' and a 'value' property
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     * @param string Name of file to be given to the user
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     * @param string Name of common tag to place each line in
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     * @param string Name of the root element. A root element should always be given.
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     * @param string Encoding in which the data is provided
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     * @return void  Prompts the user for a file download
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     */
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    public static function export_complex_table_xml ($data, $filename = 'export', $wrapper_tagname, $encoding = 'ISO-8859-1')
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    {
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        $file = api_get_path(SYS_ARCHIVE_PATH).'/'.uniqid('').'.xml';
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        $handle = fopen($file, 'a+');
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        fwrite($handle, '<?xml version="1.0" encoding="'.$encoding.'"?>'."\n");
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        if (!is_null($wrapper_tagname)) {
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            fwrite($handle, '<'.$wrapper_tagname.'>');
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        }
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        $s = self::_export_complex_table_xml_helper($data);
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        fwrite($handle,$s);
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        if (!is_null($wrapper_tagname)) {
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            fwrite($handle, '</'.$wrapper_tagname.'>'."\n");
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        }
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        fclose($handle);
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        DocumentManager :: file_send_for_download($file, true, $filename.'.xml');
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        return false;
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    }
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    /**
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     * Helper for the hierarchical XML exporter
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     * @param   array   Hierarhical array composed of elements of type ('name'=>'xyz','value'=>'...')
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     * @param   int     Level of recursivity. Allows the XML to be finely presented
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     * @return string   The XML string to be inserted into the root element
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     */
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    public static function _export_complex_table_xml_helper ($data, $level = 1)
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    {
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        if (count($data) < 1) {
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            return '';
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        }
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        $string = '';
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        foreach ($data as $row) {
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            $string .= "\n".str_repeat("\t",$level).'<'.$row['name'].'>';
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            if (is_array($row['value'])) {
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            	$string .= self::_export_complex_table_xml_helper($row['value'],$level+1)."\n";
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                $string .= str_repeat("\t",$level).'</'.$row['name'].'>';
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            } else {
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                $string .= $row['value'];
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                $string .= '</'.$row['name'].'>';
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            }
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        }
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        return $string;
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    }
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    /**
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     * @param array $data table to be read with the HTML_table class
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     */
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    public static function export_table_pdf($data, $params = array())
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    {
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        $table_html = self::convert_array_to_html($data, $params);
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        $params['format'] = isset($params['format']) ? $params['format'] : 'A4';
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        $params['orientation'] = isset($params['orientation']) ? $params['orientation'] : 'P';
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        $pdf = new PDF($params['format'], $params['orientation'], $params);
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        $pdf->html_to_pdf_with_template($table_html);
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    }
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    /**
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     * @param string $html
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     * @param array $params
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     */
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    public static function export_html_to_pdf($html, $params = array())
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    {
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        $params['format'] = isset($params['format']) ? $params['format'] : 'A4';
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        $params['orientation'] = isset($params['orientation']) ? $params['orientation'] : 'P';
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        $pdf = new PDF($params['format'], $params['orientation'], $params);
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        $pdf->html_to_pdf_with_template($html);
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    }
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    /**
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     * @param array $data
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     * @param array $params
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     *
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     * @return string
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     */
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    public static function convert_array_to_html($data, $params = array())
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    {
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        $headers = $data[0];
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        unset($data[0]);
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        $header_attributes = isset($params['header_attributes']) ? $params['header_attributes'] : array();
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        $table = new HTML_Table(array('class' => 'data_table', 'repeat_header' => '1'));
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        $row = 0;
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        $column = 0;
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        foreach ($headers as $header) {
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            $table->setHeaderContents($row, $column, $header);
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            $attributes = array();
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            if (isset($header_attributes) && isset($header_attributes[$column])) {
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                $attributes = $header_attributes[$column];
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            }
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            if (!empty($attributes)) {
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                $table->updateCellAttributes($row, $column, $attributes);
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            }
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            $column++;
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        }
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        $row++;
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        foreach ($data as &$printable_data_row) {
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            $column = 0;
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            foreach ($printable_data_row as &$printable_data_cell) {
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                $table->setCellContents($row, $column, $printable_data_cell);
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                //$table->updateCellAttributes($row, $column, $atributes);
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                $column++;
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            }
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            $table->updateRowAttributes($row, $row % 2 ? 'class="row_even"' : 'class="row_odd"', true);
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            $row++;
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        }
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        $table_tp_html = $table->toHtml();
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        return $table_tp_html;
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    }
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}
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