acf/location/rule_values/(param) │ filter-hook │ ACF 1.0

Usage

add_filter( 'acf/location/rule_values/(param)', 'wp_kama_acf_location_rule_values_param_filter', 10, 2 );

/**
 * Function for `acf/location/rule_values/(param)` filter-hook.
 * 
 * @param  $values 
 * @param  $rule   
 *
 * @return 
 */
function wp_kama_acf_location_rule_values_param_filter( $values, $rule ){

	// filter...
	return $values;
}

$values

-

$rule

-

Where the hook is called

$values = apply_filters( "acf/location/rule_values/{$rule['param']}", $values, $rule );

Where the hook is used in Advanced Custom Fields PRO

add_filter( "acf/location/rule_values/{$this->name}", array( $this, 'rule_values' ), 5, 2 );