Question

我在localhost和远程服务器中使用不同的配置文件。这让我非常不舒服，因为每次我需要更改服务器名称，密码和数据库名称是否有其他任何一种方法可以使用单一配置方法连接localhost和远程服务器？

这是我的配置文件：

<?php
    $servername = "localhost";
    $username = "username";
    $password = "password";
    $dbname = "myDB";

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

    // Check connection
    if ($conn->connect_error) {
       die("Connection failed: " . $conn->connect_error);
    }

    $conn->close();
?>

Answer 1

您需要检查主机运行时间。

以下代码将在文件运行时检查主机。

根据主机的不同，它将使用不同的凭据。

<?php
$host = $_SERVER['HTTP_HOST'];
if ($host == 'localhost') {
    $servername = "localhost";
    $username = "username";
    $password = "password";
    $dbname = "myDB";
}
else {
    $servername = "REMOTE_HOST";
    $username = "REMOTE_USERNAME";
    $password = "REMOTE_PASSWORD";
    $dbname = "REMOTE_DB";
}

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
 die("Connection failed: " . $conn->connect_error);
}
$conn->close();
?>

Answer 2

您可以检查存储当前主机的超全局$_SERVER数组的HTTP_HOST值。

最好使用strpos代替比较。您的HTTP_HOST可以拥有指定的非默认端口，例如localhost:8080。没关系，因为您的远程主机不太可能包含localhost名称。

<?php
    if (strpos($_SERVER['HTTP_HOST'], 'localhost') !== false)
    { 
        $servername = "localhost";
        $username = "username";
        $password = "password";
        $dbname = "myDB";
    } else {
        $servername = "10.11.12.13";
        $username = "username";
        $password = "P@$$w0rd";
        $dbname = "myDBName";            
    }

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

    // Check connection
    if ($conn->connect_error) {
        die("Connection failed: " . $conn->connect_error);
    }

    $conn->close();
?>

Answer 3

在虚拟主机中设置环境

//set the sync context
var thisSyncContext = new SynchronizationContext();
SynchronizationContext.SetSynchronizationContext(thisSyncContext);

thisSyncContext.Post(cb => {
    var ctx = SynchronizationContext.Current; //<-- this is null
    var equals = thisSyncContext.Equals(ctx); //<-- this is false
},null);

thisSyncContext.Send(cb => {
    var ctx = SynchronizationContext.Current; //<-- this is not null
    var equals = thisSyncContext.Equals(ctx); //<-- this is true
}, null);

因此，您的虚拟主机可能如下所示：

    SetEnv environment {production/development}

php代码：

<VirtualHost *:80>
    ServerAdmin webmaster@dummy-host2.example.com
    DocumentRoot "/path/httpd"
    ServerName mysite.local
    ServerAlias mysite.local
    SetEnv environment production
</VirtualHost>

如何使用单个配置文件配置localhost和远程服务器

3 个答案: