php+mysql+ajax仿百度谷歌搜索下拉自动提示框效果_PHP教程

/*
Navicat MySQL Data Transfer

Source Server : localhost
Source Server Version : 50528
Source Host : localhost:3306
Source Database : ajaxdemo1

Target Server Type : MYSQL
Target Server Version : 50528
File Encoding : 65001

Date: 2013-07-23 17:52:48
*/

SET FOREIGN_KEY_CHECKS=0;
-- ----------------------------
-- Table structure for `article`
-- ----------------------------
DROP TABLE IF EXISTS `article`;
CREATE TABLE `article` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`title` varchar(64) NOT NULL,
`click` int(11) NOT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `title` (`title`)
) ENGINE=MyISAM AUTO_INCREMENT=13 DEFAULT CHARSET=gbk;

-- ----------------------------
-- Records of article
-- ----------------------------
INSERT INTO `article` VALUES ('1', 'php', '58');
INSERT INTO `article` VALUES ('2', 'pps', '99');
INSERT INTO `article` VALUES ('3', 'pdf阅读器下载', '32');
INSERT INTO `article` VALUES ('4', 'pptv', '52');
INSERT INTO `article` VALUES ('5', 'photoshop', '58');
INSERT INTO `article` VALUES ('6', 'photoshop cs5 序列号', '26');
INSERT INTO `article` VALUES ('7', 'phpcms', '56');
INSERT INTO `article` VALUES ('8', 'phpnow', '10');
INSERT INTO `article` VALUES ('9', 'php文件如何打开', '18');
INSERT INTO `article` VALUES ('10', 'php发展', '6');
INSERT INTO `article` VALUES ('11', 'php学习', '158');
INSERT INTO `article` VALUES ('12', 'php教程', '88');

header("Content-type:text/html;charset=gb2312");
//数据库配置信息(用户名,密码，数据库名，表前缀等)
$cfg_dbhost = "localhost";
$cfg_dbuser = "root";
$cfg_dbpwd = "dddddd";
$cfg_dbname = "ajaxdemo1";
$cfg_dbprefix = "";

$link = mysql_connect($cfg_dbhost,$cfg_dbuser,$cfg_dbpwd);
mysql_select_db($cfg_dbname);
mysql_query("set names gbk");
//防止乱码
$keywords = iconv("utf-8","gb2312//IGNORE",$_POST['keywords']);
//匹配输入的关键字相关的标题，并按点击量排名，点击越多的排最前面
$sql = "select title from ".$cfg_dbprefix."article where title like '%".$keywords."%' order by click desc limit 0,9;";
//echo $sql;
$res = mysql_query($sql,$link);

$mNums = mysql_num_rows($res);
//echo $mNums;
$row=mysql_fetch_array($res);
if($mNums<1){
echo "no";
exit();
}else if($mNums==1){
//返回json数据
echo "[{'keywords':'".iconv_substr($row['title'],0,14,"gbk")."'}]";
}else{
$result="[{'keywords':'".iconv_substr($row['title'],0,14,"gbk")."'}";
while($row=mysql_fetch_array($res)){
$result.=",{'keywords':'".iconv_substr($row['title'],0,14,"gbk")."'}";
}
$result.=']';
echo $result;
}
mysql_free_result($res);

?>