php获取表中数据在php中获取表单变量的值有三种方法

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PHP如何获取数据库表中个字段的数据

?php

$servername = "localhost";

$username = "root";

$password = "password";//mysql密码

$dbname = "myDB";//选择数据库

// 创建连接

$conn = new mysqli($servername, $username, $password, $dbname);

// 检测连接

if ($conn-connect_error) {

die("Connection failed: " . $conn-connect_error);

}

$sql = "SELECT id, firstname, lastname FROM MyGuests";//sql查询语句

$result = $conn-query($sql);//获得查询结果

if ($result-num_rows 0) {

// 输出每行数据

while($row = $result-fetch_assoc()) {

echo "br id: ". $row["id"]. " - Name: ". $row["firstname"]. " " . $row["lastname"];

}

} else {

echo "0 results";

}

$conn-close();