cr_get_data_crypto.php

<?php

function cr_get_data_crypto( $type = '', $symbol = '' ) {
    $symbol    = $symbol ? $symbol : cr_get_crypto_symbol();
    $cache_key = $symbol . '-coinsnapshot';
    $data      = wp_cache_get( $cache_key );

    if ( $symbol && false === $data ) {
        $file = CRYPT_REVIEWS_PATH . "data-import/coins/$symbol-coinsnapshot.json";
        $data = is_file( $file ) ? json_decode( file_get_contents( $file ) ) : [];

        // Сохраняем данные в кеш
        wp_cache_set( $cache_key, $data );
    }

    if ( empty( $data->Data ) || ! $data = $data->Data ) {
        return '';
    }

    foreach ( explode( '/', $type ) as $key ) {
        $data = isset( $data->{$key} ) ? $data->{$key} : '';
    }

    return $data;
}