PHP method to implement SQLite operation class based on PDO-PHP Tutorial-php.cn

PHP method to implement SQLite operation class based on PDO

墨辰丷

Release： 2023-03-27 08:42:02

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This article mainly introduces the SQLite operation class implemented by PHP based on PDO, including operation implementation techniques and usage methods such as addition, deletion, modification, query, and transactions. Friends in need can refer to the following

The details are as follows:

Direct code:

Note: Be sure to write the database save path

<?php
// sqlite分页类
class SqliteDB{
  public function __construct(){
    // 初始化数据库，并且连接数据库 数据库配置
    $this->db = new PDO(&#39;sqlite:&#39;.dirname(__FILE__).&#39;\log.db&#39;);
    $this->table_name=$tab;
    $this->tab_init();
  }
  public function tab_init()
  {
    # 表初始化,创建表
    $this->db->exec("CREATE TABLE log(
      id integer PRIMARY KEY autoincrement,
      urls varchar(200),
      ip varchar(200),
      datetimes datetime default (datetime(&#39;now&#39;, &#39;localtime&#39;))
      )");
  }
  public function insert($tab_name,$key_list,$value_list)
  {
    // echo "INSERT INTO ".$tab_name." (".$key_list.") values(".$value_list.")";
    $result=$this->db->exec("INSERT INTO ".$tab_name." (".$key_list.") values(".$value_list.")");
    if (!$result) {
      return false;
    }
    // echo "{{{INSERT INTO ".$tab_name." (".$key_list.") values(".$value_list.")}}}}";
    $res=$this->db->beginTransaction();//事务回gun
  }
  public function total($tab_name,$tj=&#39;&#39;)//求总记录数目
  {
    $sth = $this->db->prepare(&#39;SELECT count(id) as c FROM &#39;.$tab_name.&#39; &#39;.$tj);
    $sth->execute();
    $result = $sth->fetchAll();
    return $result[0][&#39;c&#39;];
  }
  public function update()
  {
    # 修改
  }
  function delete($value=&#39;&#39;)
  {
    # 删除
  }
  public function query($tab_name,$tj=&#39;&#39;)//表名称和条件
  {
    $sth = $this->db->prepare(&#39;SELECT * FROM &#39;.$tab_name.&#39; &#39;.$tj);
    // echo &#39;SELECT * FROM &#39;.$tab_name.&#39; &#39;.$tj;
    $sth->execute();
    $result = $sth->fetchAll();
    return $result;
  }
}
// $db=new SqliteDB();
// $res=$db->insert(&#39;log&#39;,&#39;ip,urls,datetimes&#39;,&#39;"127.0.0.1","www.baidu.com","2012-12-12 00:00:00"&#39;);//添加案例
// $res=$db->query(&#39;log&#39;);//查询案例
// $res=$db->total(&#39;log&#39;);//查询案例
// print_r($res);
// foreach ($res as $key => $row) {
// echo $row[&#39;urls&#39;];
// }
?>

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