更新时间:2022-10-05 07:53:09
$url = "mysql:host=主机地址;dbname=库名"; //连接数据库的参数
$user = "用户名";
$pwd = "密码";
$conn = new PDO($url,$user,$pwd); //连接数据库
$conn->query("set names utf8"); //设置编码
$st = $conn->query("select查询语句"); //执行select查询语句,返回数据库操纵对象statement
$rs = $st->fetchAll(); //获得结果集,结果集就是一个二维数组
//显示所有记录
foreach($rs as $value)
{
echo $value["字段名|列序号"];
}
//关闭数据库
unset($rs);
unset($st);
unset($conn);
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$url = "mysql:host=主机地址;dbname=库名";
$user = "用户名";
$pwd = "密码";
$conn = new PDO($url,$user,$pwd);
$conn->query("set names utf8");
$st = $conn->prepare("select语句");//指定
$st->execute();//执行
$rs = $st->fetchAll();
foreach($rs as $value)
{
echo $value["字段名|列序号"];
}
unset($rs);
unset($st);
unset($conn);
|
$url = "mysql:host=主机地址;dbname=库名";
$user = "用户名";
$pwd = "密码";
$conn = new PDO($url,$user,$pwd);
$conn->query("set names utf8");
$row = $conn->exec("insert|update|delete语句");
unset($conn);
|
$url = "mysql:host=主机地址;dbname=库名";
$user = "用户名";
$pwd = "密码";
$conn = new PDO($url,$user,$pwd);
$conn->query("set names utf8");
$st = $conn->prepare("insert|update|delete语句"); //指定要执行的sql语句, 指定where Id=:a ,参数名:a
$st->bindParam(":名",$变量); //bind绑定 paramter参数:为sql语句中的:a 绑定变量$id
$result = $st->execute(); //执行prepare所指定的sql语句
unset($st);
unset($conn);
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