functions.inc.php

<?php


// compare version numbers of local module.xml and remote module.xml 
// returns true if a new version is available
function callstatistics_vercheck() {
	$newver = false;
	$module_local = callstatistics_xml2array("modules/callstatistics/module.xml");
	$module_remote = callstatistics_xml2array("https://raw.github.com/POSSA/freepbx-Call-Statistics/master/module.xml");
	if ( $module_remote[module][version] > $module_local[module][version])  {
		$newver = true;
	}
	return ($newver);
}

/*  The group2chan function receives a DAHDI group number and returns an array of DAHDI channels in the group
 *  The output from the Asterisk command "dahdi show channels group <integer>" is parsed. Tested on Asterisk 1.8
 *  and Asterisk 11.
 */
function callstatistics_group2chan($groupid) {
	global $astman;

	// strip non-digits and assume the remaining number is the group number
	$groupid = preg_replace("/[^0-9]*/", "", $groupid); 

	// use phpagi class to query channels in dahdi group
	$data = $astman->command("dahdi show channels group $groupid");

//	$channels = array();
	foreach(explode("\n", $data['data']) as $line) {
		// catch the leading digits of each line and ignore the rest of the line
		preg_match("~^.*?(\d+?) .*~",$line,$foo);
		if (trim($foo[1]) != "") {
			$channels[] = trim($foo[1]);
		}
	}
	if (isset($channels)) {
		return $channels;
	}
	else {
		return false;
	}
}


//Parse XML file into an array
function callstatistics_xml2array($url, $get_attributes = 1, $priority = 'tag')  {
	$contents = "";
	if (!function_exists('xml_parser_create'))
	{
		return array ();
	}
	$parser = xml_parser_create('');
	if(!($fp = @ fopen($url, 'rb')))
	{
		return array ();
	}
	while(!feof($fp))
	{
		$contents .= fread($fp, 8192);
	}
	fclose($fp);
	xml_parser_set_option($parser, XML_OPTION_TARGET_ENCODING, "UTF-8");
	xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
	xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 1);
	xml_parse_into_struct($parser, trim($contents), $xml_values);
	xml_parser_free($parser);
	if(!$xml_values)
	{
		return; //Hmm...
	}
	$xml_array = array ();
	$parents = array ();
	$opened_tags = array ();
	$arr = array ();
	$current = & $xml_array;
	$repeated_tag_index = array ();
	foreach ($xml_values as $data)
	{
		unset ($attributes, $value);
		extract($data);
		$result = array ();
		$attributes_data = array ();
		if (isset ($value))
		{
			if($priority == 'tag')
			{
				$result = $value;
			}
			else
			{
				$result['value'] = $value;
			}
		}
		if(isset($attributes) and $get_attributes)
		{
			foreach($attributes as $attr => $val)
			{
				if($priority == 'tag')
				{
					$attributes_data[$attr] = $val;
				}
				else
				{
					$result['attr'][$attr] = $val; //Set all the attributes in a array called 'attr'
				}
			}
		}
		if ($type == "open")
		{
			$parent[$level -1] = & $current;
			if(!is_array($current) or (!in_array($tag, array_keys($current))))
			{
				$current[$tag] = $result;
				if($attributes_data)
				{
					$current[$tag . '_attr'] = $attributes_data;
				}
				$repeated_tag_index[$tag . '_' . $level] = 1;
				$current = & $current[$tag];
			}
			else
			{
				if (isset ($current[$tag][0]))
				{
					$current[$tag][$repeated_tag_index[$tag . '_' . $level]] = $result;
					$repeated_tag_index[$tag . '_' . $level]++;
				}
				else
				{
					$current[$tag] = array($current[$tag],$result);
					$repeated_tag_index[$tag . '_' . $level] = 2;
					if(isset($current[$tag . '_attr']))
					{
						$current[$tag]['0_attr'] = $current[$tag . '_attr'];
						unset ($current[$tag . '_attr']);
					}
				}
				$last_item_index = $repeated_tag_index[$tag . '_' . $level] - 1;
				$current = & $current[$tag][$last_item_index];
			}
		}
		else if($type == "complete")
		{
			if(!isset ($current[$tag]))
			{
				$current[$tag] = $result;
				$repeated_tag_index[$tag . '_' . $level] = 1;
				if($priority == 'tag' and $attributes_data)
				{
					$current[$tag . '_attr'] = $attributes_data;
				}
			}
			else
			{
				if (isset ($current[$tag][0]) and is_array($current[$tag]))
				{
					$current[$tag][$repeated_tag_index[$tag . '_' . $level]] = $result;
					if ($priority == 'tag' and $get_attributes and $attributes_data)
					{
						$current[$tag][$repeated_tag_index[$tag . '_' . $level] . '_attr'] = $attributes_data;
					}
					$repeated_tag_index[$tag . '_' . $level]++;
				}
				else
				{
					$current[$tag] = array($current[$tag],$result);
					$repeated_tag_index[$tag . '_' . $level] = 1;
					if ($priority == 'tag' and $get_attributes)
					{
						if (isset ($current[$tag . '_attr']))
						{
							$current[$tag]['0_attr'] = $current[$tag . '_attr'];
							unset ($current[$tag . '_attr']);
						}
						if ($attributes_data)
						{
							$current[$tag][$repeated_tag_index[$tag . '_' . $level] . '_attr'] = $attributes_data;
						}
					}
					$repeated_tag_index[$tag . '_' . $level]++; //0 and 1 index is already taken
				}
			}
		}
		else if($type == 'close')
		{
			$current = & $parent[$level -1];
		}
	}
	return ($xml_array);
}   // end of xml2array function