<?php
/**
 * Direct deserialization test: loads Monolog, unserializes the chain,
 * lets __destruct fire. Should execute system('id').
 */
require __DIR__ . '/vendor/autoload.php';

$payload = base64_decode($argv[1] ?? '');
if (!$payload) {
    fwrite(STDERR, "Usage: php test_chain.php <base64_chain>\n");
    exit(1);
}

fwrite(STDERR, "Payload length: " . strlen($payload) . "\n");
fwrite(STDERR, "Unserializing...\n");

$obj = unserialize($payload);

fwrite(STDERR, "Object type: " . get_class($obj) . "\n");
fwrite(STDERR, "Letting __destruct fire (end of script)...\n");

// __destruct fires here when $obj goes out of scope