Create a Gravity Form dropdown with custom array values

gf-select-custom-array-filter

add_filter('gform_pre_render', 'tdgf_favorite_food');
function tdgf_favorite_food($form) {
	if(empty($form['fields'])) return;
	foreach ($form['fields'] as $key => &$field) {
		if($field['cssClass']!='favorite_food' || empty($field['choices'])) continue;

		$field['choices'] = array('apples' => 'Apples', 'oranges' => 'Oranges');
	}

	return $form;
}