xml2json.php

<?php 
header('Content-Type: application/json');    
//$xmlfile = 'xml/EIT_00002_20140507.xml';


function xml2json($file) {
	if (file_exists($file)) {
	    $xml = simplexml_load_file($file);
	    $date = $xml->EventDate;

	    foreach ($xml->Event as $data) {

	            $filtered_xml = [];
	            
	            $startime = (string)$data->EventStartTime;
	            $endtime = (string)$data->EventEndTime; 

	            $filtered_xml['id'] = (string)$data->event_id;
	            $filtered_xml['name'] = (string)$data->EventDetailInfo->eventName;
	            $filtered_xml['description'] = (string)$data->Extended_DetailInfo->message;
	            $filtered_xml['startime'] = getEpoch($date.$startime);
	            $filtered_xml['endtime'] = getEpoch($date.$endtime);
	            $filtered_xml['duration'] = $filtered_xml['endtime'] - $filtered_xml['startime'];	

	            $json = json_encode(($filtered_xml), JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE). ",";
	       		$output .= $json;
	    }
	    return $output;
	} else {
	    exit('Failed to open '.$file);
	}
}

function getEpoch($datestring) {
    $timeEpoch = DateTime::createFromFormat('YmdHis', $datestring)->getTimestamp();
    return $timeEpoch;
}

	//loop through directory for each xml file
	$xmlfiles = glob('xml/*.{xml}', GLOB_BRACE);
	foreach ($xmlfiles as $xmlfile) {
		//set the output file name to .json
		$filename = basename($xmlfile, ".xml").".json";
		$result = xml2json($xmlfile);

		//create new file
		$handle = fopen($_SERVER['DOCUMENT_ROOT'] ."/lim/xmltojson/json/". $filename, "w") or die ('Cannot open file: ' .$filename);

		//write json data into new file
		if( fwrite($handle, $result) === FALSE) {
			echo "Cannot write to file.";
			exit;
		}

		echo "Success wrote date to file:" .$filename ."\n";
		fclose($handle);
		}

?>