这篇文章主要介绍了php+mysqli使用面向对象方式查询数据库的方法,实例分析了mysqli对象的创建、连接、查询及返回结果、释放资源等技巧,需要的朋友可以参考下
本文实例讲述了php+mysqli使用面向对象方式查询数据库的方法。分享给大家供大家参考。具体实现方法如下:
connect_error){//connect_error为属性,报错
die("数据库连接失败:".$mysqli->connect_errno."--".$mysqli->connect_error);
// connect_errno:错误编号
}
$mysqli->select_db("liuyan");//选择数据库
$mysqli->query("set names 'GBK'");
//第二步:数据库查询,代码如下
$sql = "select title,contents from news limit 5,5";
//第三步:执行,显示结果
$res = $mysqli->query($sql) or die($mysqli->error);
// 返回值 $res 为资源类型(获取到结果的资源类型)
if($res){
while($row = $res->fetch_assoc()){
//注意:fetch_assoc()为 MySQLi_Result 里的函数,详情见手册
echo "标题:".$row['title']."
内容:".$row['contents']."
"; } } //第四步,释放结果集,,关闭连接 $res->free(); $mysqli->close(); ?>
希望本文所述对大家的php程序设计有所帮助。

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