一个常用php mysql数据库连接类

作者：袖梨 2022-06-24

代码如下

复制代码

php
class ConnectionMySQL{
     //主机
     private $host="localhost";
     //数据库的username
     private $name="root";
     //数据库的password
     private $pass="";
     //数据库名称
     private $table="phptest";
     //编码形式
     private $ut="utf-8";

     //构造函数
     function __construct(){
         $this->ut=$ut;
         $this->connect();

     }

     //数据库的链接
     function connect(){
         $link=mysql_connect($this->host,$this->name,$this->pass) or die ($this->error());
         mysql_select_db($this->table,$link) or die("没该数据库：".$this->table);
         mysql_query("SET NAMES '$this->ut'");
     }

     function query($sql, $type = '') {
         if(!($query = mysql_query($sql))) $this->show('Say:', $sql);
         return $query;
     }

     function show($message = '', $sql = '') {
         if(!$sql) echo $message;
         else echo $message.'
'.$sql;
     }

     function affected_rows() {
         return mysql_affected_rows();
     }

     function result($query, $row) {
         return mysql_result($query, $row);
     }

     function num_rows($query) {
         return @mysql_num_rows($query);
     }

     function num_fields($query) {
         return mysql_num_fields($query);
     }

     function free_result($query) {
         return mysql_free_result($query);
     }

     function insert_id() {
         return mysql_insert_id();
     }

     function fetch_row($query) {
         return mysql_fetch_row($query);
     }

     function version() {
         return mysql_get_server_info();
     }

     function close() {
         return mysql_close();
     }

     //向$table表中插入值
     function fn_insert($table,$name,$value){
         $this->query("insert into $table ($name) value ($value)");
     }
     //根据$id值删除表$table中的一条记录
     function fn_delete($table,$id,$value){
         $this->query("delete from $table where $id=$value");
         echo "id为". $id." 的记录被成功删除!";
     }
}

//调用方法