PHP100视频教程26：制作自己的PHP+MYSQL的类

1、巩固学习常用MYSQL函数

2、使用类封装常用SQL操作，简化代码

3、认识面向对象在开发中的重要作用

mysql_class.php

<?php
/*
 * class mysql
 * www.php100.com 编辑器教程
 * Window - Preferences - PHPeclipse - PHP - Code Templates
 */

   class mysql{


     private $host;
     private $name;
     private $pass;
     private $table;
     private $ut;



     function __construct($host,$name,$pass,$table,$ut){
     	$this->host=$host;
     	$this->name=$name;
     	$this->pass=$pass;
     	$this->table=$table;
     	$this->ut=$ut;
     	$this->connect();

     }


     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 $message.'<br>'.$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();
	}


   //==============

    function fn_insert($table,$name,$value){

    	$this->query("insert into $table ($name) value ($value)");

    }


   }


  $db =  new mysql('localhost','root','','php100job_db',"GBK");

  //$db->fn_insert('test','id,title,dates',"'','我插入的信息',now()");



?>