PHP分割地址信息，匹配省市县

$str = '内蒙古自治区锡林郭勒盟西乌珠穆沁旗详细地址详细地址xxx';

function addressSplit($address)
{
    preg_match('/(.*?(省|自治区))/', $address, $matches);
    if (count($matches) > 1) {
        $province = $matches[count($matches) - 2];
        $address = str_replace($province, '', $address);
    }
    preg_match('/(.*?(市|自治州|州|地区|区划|县|盟))/', $address, $matches);
    if (count($matches) > 1) {
        $city = $matches[count($matches) - 2];
        $address = str_replace($city, '', $address);
    }
    preg_match('/(.*?(市|区|县|旗|镇|乡|街道))/', $address, $matches);
    if (count($matches) > 1) {
        $area = $matches[count($matches) - 2];
        $address = str_replace($area, '', $address);
    }

    $data = [
        'province' => isset($province) ? $province : '',
        'city' => isset($city) ? $city : '',
        'area' => isset($area) ? $area : '',
        'address' => isset($address) ? $address : '',
    ];

    if ($city == '北京市' || $city == '天津市' || $city == '重庆市' || $city == '上海市') {
        $data['province'] = $city;
    }

    return $data;
}
$s = addressSplit($str);
print_r($s);

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