Supported Versions: PHP 5 >= 5.2.0, PHP 7, PHP 8, PECL json >= 1.2.0
Decodes a JSON string
<?php json_decode(    string $json,    ?bool $associative = null,    int $depth = 512,    int $flags = 0): mixed
<?php     protected function regexp(): string

    {

        return '/(?:'.json_decode(file_get_contents(dirname(__FILE__).'/regexp.json')).')/u';

    }

}