book_admin/application/main/model/object/BaseObject.php

<?php
/**
 * Created by PhpStorm.
 * User: Bear
 * Date: 2018/11/10
 * Time: 下午6:06
 */

namespace app\main\model\object;

abstract class BaseObject
{
    /**
     * 将参数绑定对象
     * @param       $params
     * @param array $key_map 如果参数key与对象key不一致，需要添加映射
     * @return $this
     */
    public function bind($params, $key_map = [])
    {
        if (is_array($params)) {
            foreach ($params as $field => $value) {
                if (array_key_exists($field, $key_map)) {
                    $field = $key_map[$field];
                }
                $this->$field = $value;
            }
        }
        return $this;
    }

    /**
     * 设置属性
     * @param $field
     * @param $value
     * @return BaseObject
     */
    public function set($field, $value)
    {
        return $this->bind([$field => $value]);
    }

    //获取属性
    public function get($field)
    {
        return $this->{$field};
    }

    /**
     * 转化为数组
     * @return mixed
     */
    public function toArray()
    {
        $data = [];
        foreach ($this as $field => $value) {
            if ($value === NULL) {
                continue;
            }
            $data[$field] = $value;
        }
        return json_decode(json_encode($data), true);
    }

    /**
     * 转化为JSON
     */
    public function toJson()
    {
        return json_encode($this, JSON_UNESCAPED_UNICODE);
    }

    /**
     * 转化为xml
     * @param array $data
     * @param bool  $root
     * @return string
     */
    public function toXml($data = [], $root = true)
    {
        if (!$data) {
            $data = $this->toArray();
        }
        $str = "";
        if ($root) $str .= "<xml>";
        foreach ($data as $key => $val) {
            if (is_array($val)) {
                $child = $this->toXml($val, false);
                $str .= "<$key>$child</$key>";
            } else {
                $str .= "<$key><![CDATA[$val]]></$key>";
            }
        }
        if ($root) $str .= "</xml>";
        return $str;
    }

    /**
     * @param $keys
     * @return static
     */
    public function filterObj($keys)
    {
        $return = new static();
        foreach ($keys as $key) {
            $return->$key = $this->$key;
        }

        return $return;
    }

    /**
     * @param $keys
     * @return array
     */
    public function filterArray($keys)
    {
        $return = [];
        foreach ($keys as $key) {
            $return[$key] = $this->$key;
        }

        return $return;
    }
}