How to implement browsing history in php

php method to implement browsing records: 1. Set initial data; 2. Obtain cookie records; 3. Determine whether browsing records exist; 4. Serialize the browsing array and write it to cookies; 5. Read cookies Just record it.

The operating environment of this article: Windows 7 system, PHP version 7.1, DELL G3 computer

How to achieve browsing history in php?

php implements historical browsing records

In fact, the principle is very simple, that is, using cookies to achieve records. The point to note is that you need to set it up The length of the saved cookie and the recording time are as follows. The following is the basic implementation of the ci framework.

If you have better ideas for implementation, please comment and discuss.

/**
 * @desc    设置cookie浏览记录
 * @date    2018-04-15 16:48:22
 * @param   [string $type记录浏览类型【as 查看记录表1；ps 查看记录表2】；int $id主键id]
 * @author  1245049149@qq.com
 * @return  [type]
 */
public function set_cookie_history($type,$id){
 
    //设置初始数据
    $set_limit = 5; //浏览记录的容量限制
 
    //初始数据过滤
    if(!in_array($type,['as','ps'])){
        return false;
    }
 
    //获取cookie记录
    $string = $type.$id;
    $history_array = unserialize($_COOKIE['cookie_history']);
    if(!$history_array)
        $history_array = [];
 
    //浏览记录存在
    if(in_array($string,$history_array)){
        unset($history_array[array_search($string , $history_array)]); //删除存在
        array_unshift($history_array,$string);//重新放在第一个
 
    //浏览记录不存在
    }else{
 
        //没有超过记录的容量限制，直接放在第一个
        if(count($history_array)<$set_limit){
            array_unshift($history_array,$string);
 
        //超过记录的容量限制，删除最后一个，然后放在第一个
        }else{
            array_pop($history_array);
            array_unshift($history_array,$string);
        }
    }
 
    //将浏览数组序列化后写入cookie
    $expire_time = 3600 * 24 * 30; //过期时间
    $cookie_domain = $this->config->item(&#39;cookie_domain&#39;);
    $history_array = serialize($history_array);
    setcookie(&#39;cookie_history&#39;, $history_array, time()+$expire_time, &#39;/&#39;, $cookie_domain);
 
}

The above is to implement the cookie recording function. The following is the method to read the cookie record:

/**
 * @desc    获取cookie浏览记录
 * @date    2018-04-15 17:42:51
 * @param   [type]
 * @author  1245049149@qq.com
 * @return  [array $return_data]
 */
public function get_cookie_history(){
    //设置初始返回数据
    $return_data = [];
 
    //获取cookie记录
    $history_array = unserialize($_COOKIE['cookie_history']);
    if(!$history_array)
        return $return_data;
 
    if($history_array){
        foreach($history_array as $k=>$v){
 
            //切割判断是否是as类型
            $as_temp = explode('as',$v);
            if($as_temp && $as_temp[1]){
                //这里写，你要查询的sql语句
                $sql = "select field1,field2 from table_test1 where id={$as_temp[1]}";
                $res = $this->db->query($sql)->row_array();
                if($res)
                    $return_data[] = ['type' => 'as','data' => $res];
            }
 
            //切割判断是否是ps类型
            $ps_temp = explode('ps',$v);
            if($ps_temp && $ps_temp[1]){
                //这里写，你要查询的sql语句
                $sql = "select field1,field2 from table_test2 where id={$as_temp[1]}";
                $res = $this->db->query($sql)->row_array();
                if($res)
                    $return_data[] = ['type' => 'ps','data' => $res];
            }
        }
        return $return_data;
    }
 
    //非法获取数据，直接返回
    return $return_data;
}

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