How to get Advanced Custom Fields field key from WordPress database?

Question

I’m using Advanced Custom Fields with post-type. I have some select custom fields, and I want to show all the label choices from each field.

I’ve tried this way.

Answer 1

Here is a modified version of answer provided by @BFDatabaseAdmin matching the exact meta_value in "LIKE"

function get_acf_key($field_name) {
  global $wpdb;
  $length = strlen($field_name);
  $sql = "
    SELECT `meta_key`
    FROM {$wpdb->postmeta}
    WHERE `meta_key` LIKE 'field_%' AND `meta_value` LIKE '%\"name\";s:$length:\"$field_name\";%';
    ";
  return $wpdb->get_var($sql);
}