A php function to scan an object to attempt to find a path to a value.

findPathToObj.php

<?php
function findPathToObj($from, $to, $maxLevel = 5): ?string
{
	$queue = [[
		'var' => $from,
		'path' => 'root',
		'level' => 0
	]];
	$seen = [];

	while (count($queue) > 0) {
		$objInfo = array_shift($queue);
		[
			'var' => $var,
			'path' => $path,
			'level' => $level
		] = $objInfo;
		if ($var === $to) {
			return $path;
		}
		if ($maxLevel !== -1 && $level > $maxLevel) {
			continue;
		}
		if (gettype($var) !== 'array' && gettype($var) !== 'object') {
			continue;
		}
		if (in_array($var, $seen, strict: true)) {
			continue;
		}
		$seen[] = $var;

		if (gettype($var) === 'array') {
			foreach ($var as $key => $value) {
				if (is_string($key)) {
					$key = "'$key'";
				}
				$queue[] = [
					'var' => $value,
					'path' => "{$path}[{$key}]",
					'level' => $level + 1
				];
			}
		} else {
			$reflection = new \ReflectionObject($var);
			$properties = $reflection->getProperties();

			foreach ($properties as $property)
			{
				$property->setAccessible(true);
				$value = $property->getValue($var);
				$key = $property->getName();
				if ($property->isProtected() || $property->isPrivate()) {
					$key = "#$key";
				}
				if ($property->isStatic()) {
					$key = "::$key";
				}
				$queue[] = [
					'var' => $value,
					'path' => "{$path}->{$key}",
					'level' => $level + 1
				];
			}
		}
	}

	return null;
}