php做站内搜索并高亮显示关键字_PHP教程

require_once 'sqlTools.class.php';//封装类，可执行dql、dml语句

$info=$_POST['info'];

$sql="select name,password,email from user_500 where name like '%$info%' or password like '%$info%' or email like '%$info%'";

$sqlTools=new SqlTools();

$res=$sqlTools->execute_dql($sql);

while ($row=mysql_fetch_assoc($res)){

$row['name']=preg_replace("/($info)/i","\1",$row['name']);

$row['password']=preg_replace("/($info)/i","\1",$row['password']);

$row['email']=preg_replace("/($info)/i","\1",$row['email']);

echo $row['name']."-->".$row['password']."-->".$row['email']."
";

}

?>

sqlTools.class.php的源代码：

class SqlTools{

private $host="localhost";

private $dbname="test";

private $dbuser="root";

private $dbpwd="";

private $conn;

public function __construct(){

$this->conn=mysql_connect($this->host,$this->dbuser,$this->dbpwd);

if(!$this->conn){

die("连接数据库失败".mysql_error());

}

mysql_select_db($this->dbname,$this->conn) or die("找不到该数据库".mysql_error());

mysql_query("set names utf8");

}

public function execute_dml($sql){

$bool=mysql_query($sql);

if ($bool){

if ($bool>0) {

return 1;

}else{

return 2;

}

}else {

return 0;

}

}

public function execute_dql($sql){

$res=mysql_query($sql);

return $res;

}

public function close_conn(){

mysql_close($this->conn);

}

}

?>