Validate address using OpenStreetMap

validateAddress.php

<?php
/**
 * Validate address using OpenStreetMap
 *
 * @param string $street
 * @param string $house_no
 * @param string $city
 * @param string $zip
 * @param string $state
 * @param string $country
 * @return array
 * @throws Exception
 * 
 * @see https://nominatim.org/release-docs/develop/api/Search/
 * @author sumonst21
 */
function validateAddress($street='', $house_no = '', $city='', $zip='', $state='', $country='de')
{
	if (empty($street) || empty($house_no) || empty($city) || empty($zip) || empty($country)) {
		throw new Exception('Incomplete address' . $street . ' ' . $house_no . ' ' . $city . ' ' . $zip . ' ' . $country);
	}
	$street = trim($street);
	$house_no = trim($house_no);
	$city = trim($city);
	$zip = trim($zip);
	$state = trim($state);
	$country = trim($country);
	$email = $email = Yii::app()->functions->getOptionAdmin('osm_email');   
	$str = $street . '+' . $house_no;
	//$str = "House No. $house_no, $street";
	$params = array(
		'format' => 'jsonv2',
		'addressdetails' => 1,
		'email' => $email,
		//'q' => $street . ' ' . $house_no . $city . $zip . $state . $country,
		'street' => $str,
		'postalcode' => $zip,
		'country' => $country,
		'city' => $city,
		'state' => $state,
		'limit' => 1,
		'accept-language' => 'de,en',
		'dedupe' => 1,
		'countrycodes' => $country
	);
	$url = "https://nominatim.openstreetmap.org/search?" . http_build_query($params);
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	// use curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); if you get error: SSL certificate problem: unable to get local issuer certificate
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    $result = curl_exec($ch);
	$err = curl_error($ch);
    curl_close($ch);
	if ($err) {
		throw new Exception($err . $url);
	}
    $data = json_decode($result, true);
	if (empty($data) || !is_array($data) || count($data) == 0) {
		//throw new Exception(Yii::t("default", "Please enter a valid street address" . $url));
		throw new Exception(Yii::t("default", "Please enter a valid street address"));
	}
	$valid_categories = array(
		["apartments"],["barracks"],["bungalow"],["cabin"],["detached"],["dormitory"],["farm"],["ger"],["hotel"],["house"],["houseboat"],["residential"],["semidetached_house"],["static_caravan"],["stilt_house"],["terrace"],["tree_house"],["commercial"],["industrial"],["kiosk"],["office"],["retail"],["supermarket"],["warehouse"],["cathedral"],["chapel"],["church"],["kingdom_hall"],["monastery"],["mosque"],["presbytery"],["religious"],["shrine"],["synagogue"],["temple"],["bakehouse"],["bridge"],["civic"],["college"],["fire_station"],["government"],["gatehouse"],["hospital"],["kindergarten"],["public"],["school"],["toilets"],["train_station"],["transportation"],["university"],["barn"],["conservatory"],["cowshed"],["farm_auxiliary"],["greenhouse"],["slurry_tank"],["stable"],["sty"],["grandstand"],["pavilion"],["riding_hall"],["sports_hall"],["stadium"],["hangar"],["hut"],["shed"],["carport"],["garage"],["garages"],["parking"],["digester"],["service"],["transformer_tower"],["water_tower"],["storage_tank"],["silo"],["beach_hut"],["bunker"],["castle"],["construction"],["container"],["dog_house"],["military"],["roof"],["ruins"],["tent"],["yes"]
	);
	$valid_categories[] = 'leisure';
	$valid_categories[] = 'amenity';
	$valid_categories[] = 'shop';
	$valid_categories[] = 'office';
	$valid_categories[] = 'entrance';
	$valid_categories[] = 'building';
	$valid_categories[] = 'historic';
	if (isset($data[0]['category']) && !in_array($data[0]['category'], $valid_categories)) {
		//throw new Exception(Yii::t("default", "Please enter a valid house number" . ' ' . $data[0]['category']));
		throw new Exception(Yii::t("default", "Please enter a valid house number, if you believe this is a mistake please contact us"), 406);
	}
	$gmap_address_with = $data[0]['lat'] . ',' . $data[0]['lon'];
	$gmap_url = 'https://www.google.com/maps/place/' . $gmap_address_with;
	return array(
		'lat' => $data[0]['lat'],
		'long' => $data[0]['lon'],
		'city' => $data[0]['address']['town'],
		'zip' => $data[0]['address']['postcode'],
	);
}