Question : xml to array

i have a xml file like below

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<?xml version="1.0" encoding="UTF-8"?>
<courses>
	<course>
		<name>Course 1</name>
		<exam>
			<title>Exam 1</title>
			<date>2010</date>
			<grade>60</grade>		
		</exam>
		<exam>
			<title>Exam 2</title>
			<date>2010</date>
			<grade>70</grade>		
		</exam>	
	</course>
	<course>
		<name>Course 2</name>
		<exam>
			<title>Exam 3</title>
			<date>2010</date>
			<grade>50</grade>
		</exam>
	</course>
</courses>

and i am converting this xml to array code like below

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function objectsIntoArray($arrObjData, $arrData = array())
{

	// if input is object, convert into array
	if (is_object($arrObjData)) {
		$arrObjData = get_object_vars($arrObjData);
	}

	if (is_array($arrObjData)) {
			foreach ($arrObjData as $index => $value) {
				if (is_object($value) or is_array($value)) {
					$value = objectsIntoArray($value); //recursive call
				}
				
				$arrData[$index] = $value;
			}
	}

	return $arrData;
}

$xml = "my.xml";

$object = simplexml_load_file($xml);

$arr = objectsIntoArray($object);

print "<pre>";

print_r($arr);

echo "Course Count ".count($arr[course])."<br/>";

foreach ($arr[course] as $course_key => $course_value){
	echo "Exam Count ".count($arr[course][$course_key][exam])."<br/>";
}

now please look Course 2 there is an exam but it prints me 3. because when there is one exam it not converts to array
exam [0] array{

}

it converts directly exam array{

}

because of that it count not exams it count tags inside exam.

how can i fix this.

thanks.

Answer : xml to array

if you use this code below you will understand what i mean. this code solved my problem.
[code]
<?
/**
* XMLToArray Generator Class
* @author : MA Razzaque Rupom <[email protected]>, <[email protected]>
* Moderator, phpResource (LINK1http://groups.yahoo.com/group/phpresource/LINK1)
* URL: LINK2http://www.rupom.infoLINK2
* @version : 1.0
* @date 06/05/2006
* Purpose : Creating Hierarchical Array from XML Data
* Released : Under GPL
*/

class XmlToArray
{

var $xml='';

/**
* Default Constructor
* @param $xml = xml data
* @return none
*/

function XmlToArray($xml)
{
$this->xml = $xml;
}

/**
* _struct_to_array($values, &$i)
*
* This is adds the contents of the return xml into the array for easier processing.
* Recursive, Static
*
* @access private
* @param array $values this is the xml data in an array
* @param int $i this is the current location in the array
* @return Array
*/

function _struct_to_array($values, &$i)
{
$child = array();
if (isset($values[$i]['value'])) array_push($child, $values[$i]['value']);

while ($i++ < count($values)) {
switch ($values[$i]['type']) {
case 'cdata':
array_push($child, $values[$i]['value']);
break;

case 'complete':
$name = $values[$i]['tag'];
if(!empty($name)){
$child[$name]= ($values[$i]['value'])?($values[$i]['value']):'';
if(isset($values[$i]['attributes'])) {
$child[$name] = $values[$i]['attributes'];
}
}
break;

case 'open':
$name = $values[$i]['tag'];
$size = isset($child[$name]) ? sizeof($child[$name]) : 0;
$child[$name][$size] = $this->_struct_to_array($values, $i);
break;

case 'close':
return $child;
break;
}
}
return $child;
}//_struct_to_array

/**
* createArray($data)
*
* This is adds the contents of the return xml into the array for easier processing.
*
* @access public
* @param string $data this is the string of the xml data
* @return Array
*/
function createArray()
{
$xml = $this->xml;
$values = array();
$index = array();
$array = array();
$parser = xml_parser_create();
xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 1);
xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
xml_parse_into_struct($parser, $xml, $values, $index);
xml_parser_free($parser);
$i = 0;
$name = $values[$i]['tag'];
$array[$name] = isset($values[$i]['attributes']) ? $values[$i]['attributes'] : '';
$array[$name] = $this->_struct_to_array($values, $i);
return $array;
}//createArray

}//XmlToArray
?>
<html>
      <head>
            <meta http-equiv="content-type" content="text/html; charset=utf-8">
      </head>
      <body>
            <?php
            $xml_data = file_get_contents("XMLFormatPerformanceReport.xml");

            //Creating Instance of the Class
            $xmlObj = new XmlToArray($xml_data);

            //Creating Array
            $arrayData = $xmlObj->createArray();

            //Displaying the Array
            echo "<pre>";
            print_r($arrayData);
            ?>
      </body>
</html>
[/code]