<?php

	class xmlLib {

		# XML File Parse -> PHP Array

		function getXML($xmlFile) {

			$xmlArr = array();
			$c = 1;

			$xml = new DomDocument('1.0', 'UTF-8');

			$xml->load($xmlFile);

			$root = $xml->documentElement;
			$children = $root->childNodes;

			foreach ($children as $element) {

				if ($element->nodeType == XML_ELEMENT_NODE && $element->nodeName == 'model') {

					$xmlArr[$c]['name']	= $element->getAttributeNode('name')->value;
					$xmlArr[$c]['age']	= $element->getAttributeNode('age')->value;
					$xmlArr[$c]['readonly']	= $element->getAttributeNode('readonly')->value;

					$c++;

				}

			}
			
			return $xmlArr;

		}

		# Add Entry

		function addEntry($add, $xmlArr, $xmlFile) {

			$p = sizeof($xmlArr) + 1;

			$xmlArr[$p]['name'] = $add['name'];
			$xmlArr[$p]['age'] = $add['age'];
			$xmlArr[$p]['readonly'] = $add['readonly'];

			if ($this->saveXML($xmlFile, $xmlArr)) {
				
				return true;

			}

		}

		# Edit Entry

		function editEntry($edit, $xmlArr, $xmlFile) {

			$who = $edit['who'];

			foreach ($xmlArr as $key => $person) {

				if ($xmlArr[$key]['name'] == $who && $xmlArr[$key]['readonly'] != '1') {

					$xmlArr[$key]['name'] = $edit['name'];
					$xmlArr[$key]['age'] = $edit['age'];

				}

			}

			if ($this->saveXML($xmlFile, $xmlArr)) {
				
				return true;

			}

		}

		# Remove Entry

		function removeEntry($remove, $xmlArr, $xmlFile) {

			$who = $remove['name'];

			foreach ($xmlArr as $key => $person) {

				if ($xmlArr[$key]['name'] == $who && $xmlArr[$key]['readonly'] != '1') {

					$xmlArr[$key] = null;

				}

			}

			if ($this->saveXML($xmlFile, $xmlArr)) {
				
				return true;

			}

		}

		# Set Entries Order

		function setOrder($order, $xmlArr, $xmlFile) {

			$tmp = array();

			for ($i = 1; $i <= sizeof($xmlArr); $i++) {

				for ($j = 1; $j <= sizeof($xmlArr); $j++) {

					if ($order[$i - 1] == $xmlArr[$j]['name']) {

						$tmp[$i]['name'] = $xmlArr[$j]['name'];
						$tmp[$i]['age'] = $xmlArr[$j]['age'];
						$tmp[$i]['readonly'] = $xmlArr[$j]['readonly'];

					}

				}

			}

			if ($this->saveXML($xmlFile, $tmp)) {
				
				return true;

			}

		}

		# Save PHP Array -> XML File

		function saveXML($xmlFile, $xmlArr) {

			$xml = new DomDocument('1.0', 'UTF-8');

			$xml->formatOutput = true;

			$root = $xml->createElement('models');
			$root = $xml->appendChild($root);

			foreach ($xmlArr as $key => $person) {

				if ($xmlArr[$key]['name'] != null) {

					$model = $xml->createElement('model');
					$model = $root->appendChild($model);

					$name = $xml->createAttribute('name');
					$name = $model->setAttribute('name', $xmlArr[$key]['name']);
					$name = $model->appendChild($name);

					$age = $xml->createAttribute('age');
					$age = $model->setAttribute('age', $xmlArr[$key]['age']);
					$age = $model->appendChild($age);

					$readonly = $xml->createAttribute('readonly');
					$readonly = $model->setAttribute('readonly', $xmlArr[$key]['readonly']);
					$readonly = $model->appendChild($readonly);

				}

			}
			
			if ($xml->save($xmlFile)) { 
				
				return true;
				
			}

		}

	}

?>