// Created on savesnippets.com · https://savesnippets.com/20PVWURzOIzanM
<?php
function jsonPretty(mixed $value): string {
    return json_encode(
        $value,
        JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE | JSON_THROW_ON_ERROR
    );
}

echo jsonPretty(['name' => 'Café', 'url' => 'https://x.com/foo']);
// {
//     "name": "Café",
//     "url": "https://x.com/foo"
// }