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由mysql数据库基础上的php程序实现单词的查询、删除、更改和查询

2013-09-25 23:19 661 查看
我做了一个php程序,将表单数据添加到数据库,借用mysql扩展库函数实现对mysql数据库的操作,能够实现添加单词、删除单词、更新和查询单词。运行环境是普通的mysql数据库和php、Apache服务器。这个程序非常简单,属于那种一看就懂的程序,不过还是要提醒一句,像那个数据库和数据表肯定事先要存在!本文用的数据库是test,数据表示test数据库下的表名为danci的数据表,一共有三个属性:id danci dt 分别是int、char、timestamp类型。直接贴代码:

用户看到的界面:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>www.codeke.com</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="keywords" content="php video,javascript" />
<meta http-equiv="description" content="php php php hp php" />
<style type="text/css">
<!--
span { margin:1px 5px;}
-->
</style>
</head>
<form action="pwd.php" method="post">
<table cellpadding="0" cellspacing="0" border="1px" cols="5" width="300">
<tr><td align="center" colspan="2">列表</td><td colspan="2" align="center">名称</td></tr>
<tr><td align="center"  valign="bottom" height="20px" rowspan="2" colspan="3">输入单词</td>
<td colspan="2" rowspan="2" valign="middle" height="20px" align="right">
<input size="26" type="text" name="danci" /></td></tr>
<tr></tr>
<tr id="thanks" style="display:none"><td colspan="5"><span>输入旧单词</span><span><input size="26" type="text" name="jiudanci" value="" /></span></td></tr>
<tr></tr>
<tr><td align="center" valign="bottom" height="20px" colspan="3" >选择操作类型</td>
	<td valign="middle" height="20px" align="right">
		<select  name="select" id="opt" onchange="javascript:change();">
			<option value="1" selected="selected">添加</option>
			<option value="2">删除</option>
			<option value="3">更改</option>
			<option value="4">查询</option>
		</select>
	</td>
</tr>
<script type="text/javascript">
	window.onload=change;
	function change(){
		var temp = document.getElementById("opt").value;
		if(temp==3){
			document.getElementById("thanks").style.display="table-row";
		}else{
			document.getElementById("thanks").style.display="none";
		}
	}
</script>
<tr><td colspan="2"><input type="reset" /></td><td align="center" colspan="2"><input type="submit" value="submit" /></td></tr>
</table> 
</form>


处理表单数据的php文件:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>www.codeke.com</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<!--meta http-equiv="refresh" content="3;url=access.htm" /-->
</head> 
<?php 
  require_once 'def.class.php'; //这个文件用于数据库操作
  $danci=$_POST['danci'];
  $jiudanci=$_POST['jiudanci'];
  $choice=$_POST['select'];
 
  $danci=strtoupper($danci);  //将单词统一转化成大写的
  $jiudanci=strtoupper($jiudanci);
  $sqlQue=new SqlDiy("like","admin");
  $sqlQue->setDanci($danci);
  $sqlQue->setJiudanci($jiudanci);
  switch($choice){
	case 1:$sqlQue->setOper("insert");break; 
	case 2:$sqlQue->setOper("delete");break;
	case 3:$sqlQue->setOper("update");break;
	case 4:$sqlQue->setOper("select");break;
  }
  if($danci==$jiudanci&&$choice==3){
  	echo "新单词和旧单词一样,无需更新";
  	
  }
  if($danci==""||($jiudanci==""&&$choice==3)){
	echo "输入为空";
	return ;
  }
  
  $sqlQue->connSql();
  
?>


封装了连接数据库的类php文件:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>www.codeke.com</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head> 
<?php

    //header("content-type:text/html;charset=utf-8");
     class SqlDiy{
    	private $time;
    	private $pwd;
    	private $danci;
    	private $user;
    	private $jiudanci;
    	private $oper;
    	function __construct($user,$pwd){
    		$this->user=$user;
    		$this->pwd=$pwd;
    		$this->timeWorkErr();
    	}
    	function timeWorkErr(){
	    	$this->time=time();
	    	date_default_timezone_set('PRC');
    	}
    	function connSql(){
	    	
    		$conn=mysql_connect("localhost",$this->user,$this->pwd);
	    	if(!$conn){
	    		echo mysql_error().error_log(mysql_error.date("m月d日 H:i:s",$this->time)."\r\n",3,"c:/error.txt");
	    	}
	    	mysql_select_db("test",$conn) or error_log(mysql_error.date("m月d日 H:i:s",$this->time)."\r\n",3,"c:/error.txt");
	    	mysql_query("set names utf8");
	    	switch($this->oper){
	    		case "select":$query="select * from `danci` where danci='$this->danci' limit=0,1";break; //一般不要用*,需要哪个字段就选择哪个字段
	    		case "delete":$query="delete from `danci` where danci='$this->danci'";break;
	    		case "insert":$query="insert into `danci`(danci)values('$this->danci')";break;
	    		case "update":$query="update `danci` set `danci`='$this->danci' where `danci`='$this->jiudanci'";break;
	    	}
	    	//$query="update user set name='lily' where name='lily'";
	    	mysql_query("select * from `danci` where danci='$this->danci'",$conn);	        
	    	if(mysql_affected_rows($conn)>0&&$this->oper=="insert"){
	    		echo "<br />单词库中已经有该单词,无需添加"; 
	    		return ;		
	    	}  	
	    	if(mysql_affected_rows($conn)<1&&$this->oper=="select"){
	    		echo "<br />单词库里没有该单词"; //针对查询操作
	    		return ;
	    	}
	    	if(mysql_affected_rows($conn)<1&&$this->oper=="delete"){
	    		echo "<br />无法删除一个没有的单词"; //针对删除操作
	    		return ;
	    	}
	    	$res=mysql_query($query,$conn);
	    	if(mysql_affected_rows($conn)<1){
	    		echo "<br />连接数据库有误$this->jiudanci--$this->danci";
	    		error_log(mysql_error().date("m月d日 H:i:s",$this->time)."\r\n",3,"c:/error.txt");
	    	}
	    	else {
	    		if($this->oper=="select"){  		
		    		while($rows=mysql_fetch_object($res)){ 
		    			echo "<br />".$rows->id."--".$rows->danci."--".$rows->dt;
		    		}
		    		 mysql_free_result($res);
	    		}
	    		if($this->oper=="insert"){
	    			echo "<br />插入单词成功";
	    		}
	    		if($this->oper=="delete"){
	    			echo "<br />删除单词成功";
	    		}
	    		if($this->oper=="update"){
	    			echo "<br />更新单词成功";
	    		}
	    	}	    	
	    	mysql_close($conn);
    	}
    	function setJiudanci($i){
    		$this->jiudanci=$i;
    	}
    	function setOper($i){
    		$this->oper=$i;
    	}
    	function setDanci($i){
    		$this->danci=$i;
    	}
    	    	
    }
    
?>


建立数据库的函数:

function createDataBase(){ //建立一个数据表
    		$link=mysql_connect('localhost',"root",$password);//必须用root账号和密码登录
    		if(!$link){
    			die('Could not connect: ' . mysql_error());
    		}  		
    		$sql = 'CREATE DATABASE my_db';
    		if(mysql_query($sql, $link)) {
    			echo "Database my_db created successfully\n";
    		} else {
    			echo 'Error creating database: '.mysql_error()."\n";
    		}
    		
    		mysql_close($link); 		
    	}


删除数据库的函数:

function deleteDataBase(){ //删除一个数据表
    		$link=mysql_connect('localhost',"root",$password);//必须用root账号和密码登录
    		if(!$link){
    			die('Could not connect:'.mysql_error());
    		}  		
    		$sql = 'DROP DATABASE discuz';
    		if(mysql_query($sql, $link)) {
    			echo "Database discuz droped successfully\n";
    		} else {
    			echo 'Error droping database: '.mysql_error() . "\n";
    		}
    		
    		
    		mysql_close($link); 		
    	}
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