我了解了如何将JSON数据存储到自定义字段中。我完全忘记了使用add\\u操作。

下面是我在函数中添加的答案。php。

您必须添加自定义字段place\\u id及其值，然后单击“发布”或“更新”以填充其他字段。

    function google_places_data( $post = null ) {
    if ( ! $post = get_post( $post ) )
        return;
    if ( ! $place_id = get_post_meta( $post->ID, \'place_id\', true ) )
        return; // No place ID configured for this post

    if ( $data = get_post_meta( $post->ID, \'place_data\', true ) ) {
        if ( $data->timeout <= current_time( \'timestamp\' ) )
            $data = null; // Void the cache if it\'s old
    }

    if ( ! $data ) {
        $args = http_build_query(
            array(
                \'key\' => \'AIzaSyCarm54WzOXFhXqmEU3rkUorDoa8b3Nzog\', // API key
                \'placeid\' => $place_id
                )
            );

        $http = wp_remote_get( "https://maps.googleapis.com/maps/api/place/details/json?$args" );
        if ( $body = wp_remote_retrieve_body( $http ) ) {
            if ( $data =@ json_decode( $body ) )
                $data->timeout = current_time( \'timestamp\' ) + HOUR_IN_SECONDS; // Cache data for 1 hour

            $place_address = $data->result->formatted_address; 
            $place_lat = $data->result->geometry->location->lat;
            $place_long = $data->result->geometry->location->lng; 
            $place_phone = \'000-000-010\';

            update_post_meta( $post->ID, \'place_address\', $place_address );
            update_post_meta( $post->ID, \'place_lat\', $place_lat );
            update_post_meta( $post->ID, \'place_long\', $place_long );
            update_post_meta( $post->ID, \'place_phone\', $place_phone );

        }

        if ( $data ) {
            update_post_meta( $post->ID, \'place_data\', $data );

        } else {
            echo \'api error\';
        }

    }

    return $data;
}
add_action( \'save_post\', \'google_places_data\', 10, 4 );