<?php

/* Example xml file being parsed....
<?xml version="1.0"?>
<Messages>
  <Message>
    <ID>1</ID>
    <Originator>020231712</Originator>
    <Destination>020634778</Destination>
    <Message>Test message 1.</Message>
    <MessageTime>2005-03-24 8:57:40</MessageTime>
  </Message>
  <Message>
    <ID>2</ID>
    <Originator>020642863</Originator>
    <Destination>020634778</Destination>
    <Message>Test message 2.</Message>
    <MessageTime>2005-03-24 8:57:40</MessageTime>
  </Message>
</SMSMessages>

*/
/*--------------------------------------------------------------------------------------------------------
						XmlReader

XmlReader will pick the contents of any tag defined within the $xml_tags array
													
---------------------------------------------------------------------------------------------------------*/
/*-------------------------------------------------------------------------------------------------------*/
//Please define the xml tags you want to read here, n the rest is history!!!

$xml_tags = array("ID", "Originator", "Destination", "Message", "MessageTime");											
/*-------------------------------------------------------------------------------------------------------*/
class XmlReader
{
	var $curr_row = 0;
	var $curr_element = "";
	var $row_array = array();
	var $records_array = array();

	function xml_parse_file($file_name)
	{
		//Initialize Parser
		$parser=xml_parser_create();
		//Specify Handlers to start and ending tag
		xml_set_element_handler($parser, "start_element", "end_element");
		//Data Handler
		xml_set_character_data_handler($parser, "character_data");
		//match the exact case
		xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
		//Open the Data File 
		$fp= fopen($file_name, "r") ;
		//read Data
		while ($data=fread($fp, 4096))
		{
			/*
			xml_parse($parser, $data,feof($fp)) or 
			die (sprintf("XML Error: %s at line %d", xml_error_string(xml_get_error_code($parser)), xml_get_current_line_number($parser)));
			*/
			xml_parse($parser, $data,feof($fp));
		}
		xml_parser_free($parser);
	}
	
	function whitespace_strip(&$str)
	{
		$str=ereg_replace (' +', ' ', trim($str));
		$str=ereg_replace("[\r\t\n]","",$str);
	}
	
	function start_element($parser, $element_name, $element_attrs)
	{
		global $curr_element;
		global $xml_tags;
		global $row_array;
		global $params;
		//basically your looking for certain xml tags and then setting it to be the current element
		for($i=0; $i<count($xml_tags);$i++)
		{
			if($xml_tags[$i] == $element_name)
			{
				if($i == 0)
				{
					//initialize $row_array
					$row_array = array();
					for($j=0; $j<count($xml_tags);$j++)
					{
						$row_array[$j] = "";
					}
				}
				$curr_element = $xml_tags[$i];
				break;
			}
		}
	}
	
	function end_element($parser, $element_name)
	{
		global $xml_tags;
		if($element_name == $xml_tags[count($xml_tags) - 1])
		{
			global $row_array;
			global $records_array;
			$records_array[] = $row_array; 
			//I'm not using $curr_row anywhere right now but I might need to in future
			global $curr_row;
			$curr_row++;
		}
	}
	
	function character_data($parser,$data)
	{
		whitespace_strip($data);
		global $row_array;
		global $curr_element;
		global $xml_tags;
		
		
		for($i=0; $i<count($xml_tags);$i++)
		{
			if($data != "")
			{
				if($xml_tags[$i] == $curr_element)
				{
					$row_array[$i] = $data;
					break;
				}
			}
			else
			{
				if($xml_tags[$i] == $curr_element)
				{
					if(!isset($row_array[$i]))
						$row_array[$i] = "";
				}
				break;
			}
		}
	}
	
	//this function returns an array of file names for all files within a given directory
	//a rule: only put forwardslashes when necessary. If you are already in directory no need for preceding slash
	//if already in directory, no need for succeeding slash ie user '/dir1/dir2' instead of '/dir1/dir2/'
	function list_dir($files_dir='', $fileregex='') 
	{
	if (!$files_dir || !is_dir($files_dir) || !$fileregex)
	return false;
	
	$matchedfiles = array();
	
	$handle = opendir($files_dir);
	
	while(false !== ($file = readdir($handle))) 
	{
	if(is_dir($files_dir.'/'.$file) && $file <> ".." && $file <> ".") 
		{
		$subdir_matches = list_dir($files_dir.'/'.$file, $fileregex);
		$matchedfiles = array_merge($matchedfiles, $subdir_matches);
		unset($file);
	}
	elseif (!is_dir($files_dir.'/'.$file)) 
		{
		if (preg_match($fileregex, $file)) 
		array_push($matchedfiles, $files_dir.'/'.$file);
	}
	}
	closedir($handle);
	unset($handle);
	return $matchedfiles;
	}
	
	function return_dir_array($files_dir='')
	{
		$xml_files = list_dir($files_dir, "/\.(xml)$/");
		for($i=0; $i<count($xml_files); $i++)
		{
			//parse the xml file
			xml_parse_file($xml_files[$i]);
			//then delete the xml file
			//unlink($xml_files[$i]);
		}
		
		global $records_array;
		return $records_array;
	}
	
	function return_file_array($file_name)
	{
		global $records_array;
	
		if($file_name != "")
		{
			if(file_exists($file_name))
				xml_parse_file($file_name);
			else
				$records_array = NULL;
		}
		else 
			$records_array = NULL;
		
		return $records_array;
	}
}	

/*--------------------- Examples of Calling functions here -------------------------*/
/*
//to parse only 1 file
$file_name = "afrique/in/1.xml";
$return_array = return_file_array($file_name);
*/

$xmlhandler = &new XmlReader;
//to parse all the xml files in a given directory
$file_dir = "config/afrique/in";
$return_array = $xmlhandler->return_dir_array($file_dir);	

if($return_array != NULL)
{
	foreach ($return_array as $row)
	{
		foreach($row as $value)
		{
			if($value == "")
				echo('Empty'. '&nbsp;&nbsp;');
			else
				echo($value . '&nbsp;&nbsp;');
		}
		echo "<br/>";
	}
}
else
{
	echo "Xml read error!";
}
/*--------------------- End of Examples -------------------------*/