php+mysqli使用预处理技术进行数据库查询的方法_PHP

WBOY
Release: 2016-05-31 13:17:39
Original
870 people have browsed it

本文实例讲述了php+mysqli使用预处理技术进行数据库查询的方法。分享给大家供大家参考。具体如下:

代码有些难度,需要基础知识比较扎实才能好理解,代码先放上来:

这里实现查询所有 id>5 的 id,title,contents值:

代码如下:

$mysqli = new MySQLi("localhost","root","123456","liuyan");
if(!$mysqli){
 die($mysqli->error);
}
//创建一个预定义的对象 ?占位
$sql = "select id,title,contents from news where id>?";
$mysqli_stmt = $mysqli->prepare($sql);
$id=10;
//绑定参数
$mysqli_stmt->bind_param("i",$id);
//绑定结果集
$mysqli_stmt->bind_result($id,$title,$contents);
//执行
$mysqli_stmt->execute();
//取出绑定的结果集
while($mysqli_stmt->fetch()){
 echo "--$id--$title--$contents--


";
}
//关闭结果集
$mysqli_stmt->free_result();
$mysqli_stmt->close();
$mysqli->close();
?>

希望本文所述对大家的php程序设计有所帮助。

source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn:Public welfare online PHP training,Help PHP learners grow quickly!