MDS - Culture Object Spectrum display

single-object.php

<?php 

function unserialize_meta_data($data) {
	if (is_array($data)) {
		foreach ($data as $key => &$item) {
			if (is_array($item) && isset($item[0]) && is_serialized($item[0])) {
				$item = maybe_unserialize($item[0]);
			}
		}
	}
	return $data;
}

// Get and unserialize post meta
$post_id = get_the_ID();
$data = unserialize_meta_data(get_post_meta($post_id));

$spectrumData = [];

// Function to recursively search through arrays
function findSpectrumData($array, &$results) {
	if (!is_array($array)) {
		return;
	}

	foreach ($array as $item) {
		if (is_array($item)) {
			// Check if this item has the required properties
			if (isset($item['type']) && 
				isset($item['label']) && 
				isset($item['value']) && 
				str_starts_with($item['type'], 'spectrum/')) {

				$results[] = [
					'label' => $item['label'],
					'type' => $item['type'],
					'value' => $item['value']
				];
			}

			// If there's a units array, search through it
			if (isset($item['units'])) {
				findSpectrumData($item['units'], $results);
			}

			// Continue searching through other arrays
			findSpectrumData($item, $results);
		}
	}
}

// Ensure `@document` is properly unserialized
if (isset($data['@document']) && is_array($data['@document'])) {
	$documentData = $data['@document']; // It's already unserialized by unserialize_meta_data()

	// Start the search with the unserialized data
	if (isset($documentData['units'])) {
		findSpectrumData($documentData['units'], $spectrumData);
	}
}

// Check if ?spectrum is present in the URL
if (isset($_GET['spectrum'])) {
	echo '<h1>Spectrum Data</h1>';

	if (empty($spectrumData)) {
		echo '<p>No spectrum data found</p>';
	} else {
		// Display results
		foreach ($spectrumData as $item) {
			echo "<h2>Label: {$item['label']}</h2>";
			echo "<ul>";
			echo "<li>Type: {$item['type']}</li>";
			echo "<li>Value: {$item['value']}</li>";
			echo "</ul>";
			echo "<hr/>";
		}
	}
} else {
	echo '<h1>Raw Data</h1>';
	echo '<pre>';
	echo json_encode($data, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);
	echo '</pre>';
}
?>