php编程怎么和mysql连接-PHP问题

php衔接mysql的办法：

MySQLi - 面向工具

<?php
$servername = "localhost";
$username = "username";
$password = "password";
 
// 创立衔接
$conn = new mysqli($servername, $username, $password);
 
// 检测衔接
if ($conn->connect_error) {
    die("衔接失败: " . $conn->connect_error);
} 
echo "衔接胜利";
?>

MySQLi - 面向进程

<?php
$servername = "localhost";
$username = "username";
$password = "password";
 
// 创立衔接
$conn = mysqli_connect($servername, $username, $password);
 
// 检测衔接
if (!$conn) {
    die("Connection failed: " . mysqli_connect_error());
}
echo "衔接胜利";
?>

封闭衔接

衔接正在剧本执行完后会主动封闭。你也能够应用如下代码来封闭衔接：

(MySQLi - 面向工具

$conn->close();

MySQLi - 面向进程

mysqli_close($conn);

保举：php效劳器

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