Simple XML Creation

Code

<?php

/*
 * Copyright (c) 2026 Jeffery L. Paris <jparis@phpog.com>.
 * Free for personal and internal use. Paid project use requires visible credit
 * to Jeffery L. Paris. Corporate use requires a paid license fee unless a
 * separate written license states otherwise.
 */

/**
 * Simple XML Creation.
 *
 * Purpose:
 * Creates a small XML document with child elements and attributes.
 *
 * @param array $mission Mission data for the XML document.
 * @return string XML document string.
 */
function ogSnippetSimpleXmlCreation(array $mission): string {
	$title = '';
	$ship = '';
	$status = '';

	if (isset($mission['title']) === true && is_scalar($mission['title']) === true) {
		$title = trim((string) $mission['title']);
	}

	if (isset($mission['ship']) === true && is_scalar($mission['ship']) === true) {
		$ship = trim((string) $mission['ship']);
	}

	if (isset($mission['status']) === true && is_scalar($mission['status']) === true) {
		$status = trim((string) $mission['status']);
	}

	if ($title === '') {
		$title = 'Untitled Mission';
	}

	if ($ship === '') {
		$ship = 'Unknown Ship';
	}

	if ($status === '') {
		$status = 'pending';
	}

	$xml = new SimpleXMLElement('<mission></mission>');
	$xml->addAttribute('status', $status);
	$xml->addChild('title', htmlspecialchars($title, ENT_XML1 | ENT_COMPAT, 'UTF-8'));
	$xml->addChild('ship', htmlspecialchars($ship, ENT_XML1 | ENT_COMPAT, 'UTF-8'));

	$xml_output = $xml->asXML();

	if ($xml_output === false) {
		return '';
	}

	return $xml_output;
}

$mission_xml = ogSnippetSimpleXmlCreation(array(
	'title' => 'LV-426 survey',
	'ship' => 'Sulaco',
	'status' => 'active'
));

echo $mission_xml;