How to get Advanced Custom Field Value According using POST ID? [closed]

I have used Advancedcustomfields plugin to create Advanced Custom Fields.

Now, want to get an Advanced Custom field value using post id.

I have tried below and get solution.

Now,please let me know if any other way I will get same result?

  <?php

    $post->ID='15';

    $var_name= get_field('field_name', $post->ID);
    /* field name means which u gave custom field name*/
    echo $var_name;

    ?>

The solution you used seems correct. But if you still want to know alternatives, here it is:

$varname = get_post_meta($post_id, 'fieldname', true);
echo $varname;

$varname will be an array if the last parameter is false and will be the value of metadata field if the last parameter is true.

You can use the_field() as well which works similar to get_field() you used.