helpers.php

gistfile1.txt

<?php

/**
 * Retrieves data from nested structures (array/object) with '.' notation.
 * Implemented using while loop.
 *
 * @param array|object $data
 * @param string $name
 * @return mixed
 */
function get_nested_data_from($data, string $name)
{
	while (is_array($data) || is_object($data)) {
		list($name, $further) = (stripos($name,'.') !== false)
			? explode('.', $name, 2)
			: array($name, null);
			
		if (is_array($data) && is_numeric($name)) {
			$name = (int) (float) $name;
		}

		if (is_array($data)) {
			if (array_key_exists($name, $data)) {
				$data = $data[$name];
			} else {
				return null;
			} 
		} elseif (is_object($data)) {
			if (property_exists($data, $name)) {
				$data = $data->$name ?? null;
			} else {
				return null;
			} 
		}
		
		if (empty($further)) {
			return $data;
		}
		
		$name = $further;
	}

	return $data;
}


/**
 * Retrieves data from nested structures like arrays and data objects
 * (such those extracted from JSON). Accepts '.' notation.
 * Implemented using recursion.
 * 
 * @param mixed $data
 * @param string $name
 * @param mixed $default = null
 * @return mixed
 */
function recursively_get_nested_data_from($data, string $name, $default = null)
{
	list($here, $further) = (stripos($name,'.') !== false)
		? explode('.', $name, 2)
		: array($name, null);
	
	if (is_numeric($here)) {
		$here = (int) (float) $here;
	}
	
	if (empty($further)) {
		if (is_array($data) && array_key_exists($here, $data)) {
			return $data[$here] ?? $default ?? null;
		}
		
		if (is_object($data) && property_exists($data, $here)) {
			return $data->$here ?? $default ?? null;
		}
		
		return $default ?? null;
	}
	
	if (is_array($data) && array_key_exists($here, $data)) {
		return get_nested_data_from($data[$here], $further);
	}
	
	if (is_object($data) && property_exists($data, $here)) {
		return get_nested_data_from($data->$here, $further);
	}

	return $default ?? null;	
}