1,在mysql中创建数据表words。
create table words( id int primary key not null auto_increment, enword varchar(32) character set utf8 not null, chword varchar(32) character set utf8 not null );
2,编写数据库类,有以下代码可见,数据库类的封装不彻底,比如连接的关闭,需要调用后。自己手动关闭。
<?php class SqlTool { private $conn = null; private $host = "127.0.0.1"; private $user = "root"; private $password = "123456"; private $db = "test"; //mysql扩展库操作mysql数据库步骤如下 public function __construct(){ //1.获取连接 $this->conn = mysql_connect($this->host,$this->user,$this->password) or die('连接错误:'.mysql_error()); //2.选择数据库 mysql_select_db($this->db,$this->conn) or die('选择数据库出错:'.mysql_error()); //3.设置操作编码(建议有) mysql_query("set names utf-8"); } //对数据表的查询操作 public function execute_dql($sql){ $rs = mysql_query($sql,$this->conn) or die('数据库查询失败:'.mysql_error()); $rsList = array(); if($rs){ while($row = mysql_fetch_assoc($rs)){ $rsList[] = array('id ' => $row['id'], 'enword'=> $row['enword'],'chword'=> $row['chword']); } } mysql_free_result($rs); return $rsList; } //对数据表的增删改操作 public function execute_dml($sql){ $rs = mysql_query($sql,$this->conn); if(!$rs){ echo '数据库操作失败:'.mysql_error()." "; $b = 0; //表示失败 }else{ if(mysql_affected_rows($this->conn) > 0){ $b = 1; //数据表有变动 }else{ $b = 2; //没有影响数据表 } } return $b; } //关闭conn连接 public function closeConn(){ mysql_close($this->conn); } }
3,编写输入页面。
<html> <head> <title>在线词典</title> <meta http-equiv="content-type" content="text/html;charset=gb2312" /> </head> <body> <h1>查询英文</h1> <form action="onlineDictionary2.php" method="post"> 请输入英文:<input type="text" name="enword" /> <input type="hidden" value="search" name="type" /> <input type="submit" value="查询" /> </form> </body> </html>
4,编写输出页面,调用的查询,查询完毕后,需要关闭资源。
<?php require_once "SqlTool.class.php"; header("Content-type:text/html;charset=utf-8"); $en_word = $_POST['enword']; if(!isset($en_word)){ echo "输入为空,请<a href='onlineDictionary1.php'>点击</a>重新查询"; } $sql = "select chword from words where enword ='{$en_word}' limit 0,1"; $sqlTool = new SqlTool(); $res = $sqlTool->execute_dql($sql); if($res && $row=$res[0]){ echo $row['chword']; }else{ echo "没有合适的翻译!"; } $sqlTool->closeConn();
5,调用SqlTool.class.php类库,进行增删改操作如下,
<?php require_once "SqlTool.class.php"; header("Content-type:text/html;charset=utf-8"); $sql = "insert into words(enword,chword) VALUES ('hello','你好')"; $sqlTool = new SqlTool(); $res = $sqlTool->execute_dml($sql); if($res){ echo "操作成功!"; }else{ echo "操作失败!"; } $sqlTool->closeConn();