syphoxy/generator.php

## generator.php
<?php

$structure = array(
	'html' => array(
		'children' => array(
			'head' => array(
				'children' => array(
					'title' => array(
						'children' => array(
							'Hello, World'
						)
					)
				)
			),
			'body' => array(
				'children' => array(
					'h1' => array(
						'attributes' => array(
							'class' => 'page-title'
						),
						'children' => array(
							'hello, world'
						)
					),
					'p' => array(
						'children' => array(
							'lorem ipsum'
						)
					)
				)
			)
		)
	)
);

function format($string, $options = array())
{
	if (!isset($options['depth']) || is_null($options['depth'])) {
		$options['depth'] = 0;
	}

	return str_repeat("\t", $options['depth']) . $string;
}

function startTag($tagName, $attributes = array())
{
	if (!is_array($attributes) || count($attributes) == 0) {
		return '<' . $tagName . '>';
	}

	foreach ($attributes as $attr => $value) {
		$attributes_str = ' ' . $attr . '="' . $value . '"';
	}

	return '<' . $tagName . $attributes_str . '>';
}

function endTag($tagName)
{
	return '</' . $tagName . '>';
}

function renderHtml($elements, $depth = 0)
{
	$html = '';

	foreach ($elements as $tagName => $spec) {
		if (is_array($spec) && !isset($spec['attributes'])) {
			$spec['attributes'] = array();
		}

		$formatOpts = array('depth' => $depth);

		if (preg_match('/^[0-9]/', $tagName)) {
			$html .= format($spec, $formatOpts) . PHP_EOL;
		} else {
			$html .= format(startTag($tagName, $spec['attributes']), $formatOpts) . PHP_EOL;
		}

		if (isset($spec['children']) && is_array($spec['children'])) {
			$html .= renderHtml($spec['children'], $depth + 1);
		}

		if (!preg_match('/^[0-9]/', $tagName)) {
			$html .= format(endTag($tagName), $formatOpts) . PHP_EOL;
		}
	}

	return $html;
}

print renderHtml($structure);

## output.txt
<html>
	<head>
		<title>
			Hello, World
		</title>
	</head>
	<body>
		<h1 class="page-title">
			hello, world
		</h1>
		<p>
			lorem ipsum
		</p>
	</body>
</html>
	<?php

	$structure = array(
	'html' => array(
	'children' => array(
	'head' => array(
	'children' => array(
	'title' => array(
	'children' => array(
	'Hello, World'
	)
	)
	)
	),
	'body' => array(
	'children' => array(
	'h1' => array(
	'attributes' => array(
	'class' => 'page-title'
	),
	'children' => array(
	'hello, world'
	)
	),
	'p' => array(
	'children' => array(
	'lorem ipsum'
	)
	)
	)
	)
	)
	)
	);

	function format($string, $options = array())
	{
	if (!isset($options['depth']) \|\| is_null($options['depth'])) {
	$options['depth'] = 0;
	}

	return str_repeat("\t", $options['depth']) . $string;
	}

	function startTag($tagName, $attributes = array())
	{
	if (!is_array($attributes) \|\| count($attributes) == 0) {
	return '<' . $tagName . '>';
	}

	foreach ($attributes as $attr => $value) {
	$attributes_str = ' ' . $attr . '="' . $value . '"';
	}

	return '<' . $tagName . $attributes_str . '>';
	}

	function endTag($tagName)
	{
	return '</' . $tagName . '>';
	}

	function renderHtml($elements, $depth = 0)
	{
	$html = '';

	foreach ($elements as $tagName => $spec) {
	if (is_array($spec) && !isset($spec['attributes'])) {
	$spec['attributes'] = array();
	}

	$formatOpts = array('depth' => $depth);

	if (preg_match('/^[0-9]/', $tagName)) {
	$html .= format($spec, $formatOpts) . PHP_EOL;
	} else {
	$html .= format(startTag($tagName, $spec['attributes']), $formatOpts) . PHP_EOL;
	}

	if (isset($spec['children']) && is_array($spec['children'])) {
	$html .= renderHtml($spec['children'], $depth + 1);
	}

	if (!preg_match('/^[0-9]/', $tagName)) {
	$html .= format(endTag($tagName), $formatOpts) . PHP_EOL;
	}
	}

	return $html;
	}

	print renderHtml($structure);
	<html>
	<head>
	<title>
	Hello, World
	</title>
	</head>
	<body>
	<h1 class="page-title">
	hello, world
	</h1>
	<p>
	lorem ipsum
	</p>
	</body>
	</html>