A small script to return PHP stats in JSON format

stats.php

<?php
header('Content-Type: application/json');
echo json_encode(
    [
        'opcache' => opcache_get_status(),
        'realpath_cache_size' => [
            'configured' => ini_get('realpath_cache_size'),
            'real' => realpath_cache_size(),
        ]
    ],
    JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES
);