Get custom field configuration data (to get label, description, or other field configuration)

functions.php

<?php
/**
 *  This is for backwards compatibility with Field Editor 1.4.6 or older, any version 1.4.7 and newer
 *  will already have this function built-in, probably with some type of caching as well.
 * 
 *  If you decide to add this to your site, make sure to remove it later on if you upgrade to 1.4.7 or
 *  newer.
 */
if( ! function_exists( 'get_custom_field_config' ) ){

	/**
	 * Get Custom Field Configuration
	 *
	 *
	 * @since @@version
	 *
	 * @param   string    $meta_key        Meta key of the field to obtain configuration for
	 * @param   string    $config_key      (Optional) Return a specific configuration value (eg label, description, etc)
	 *
	 * @return array|bool $value           Returns FALSE if error, or field config not found, otherwise returns an
	 *                                       array of configuration data for the field.
	 */
	function get_custom_field_config( $meta_key = false, $config_key = false ){

		if( ! $meta_key || ! class_exists( 'WP_Job_Manager_Field_Editor_Fields' ) ) return false;

		$jmfe       = WP_Job_Manager_Field_Editor_Fields::get_instance();
		$all_fields = $jmfe->get_fields();

		if( empty( $all_fields ) ) return FALSE;

		/**
		 * Loop through each field group (job, company, resume_fields),
		 * checking for meta key which will be the array key.
		 */
		foreach( $all_fields as $field_group => $fields ) {

			if( array_key_exists( $meta_key, $fields ) ) {

				if( ! empty( $config_key ) && array_key_exists( $config_key, $fields[ $meta_key ] ) ){
					return $fields[ $meta_key ][ $config_key ];
				}

				return $fields[$meta_key];
			}

		}

		/**
		 * Return FALSE when all else fails
		 */
		return FALSE;

	}

}