PHP脚本'；行不通

基本上，我希望在本地运行下面的脚本，以便启动-停止-重新启动并获取服务状态。它必须显示每个命令按钮的输出。 我使用PHP5.6来运行这段代码

代码如下：

<?php
    // define cmds
    $commands = [
    'stop_apache' => [
        'description' => 'Stop Apache2',
        'cmd' => 'systemctl stop apache2'
    ],
    'restart_apache' => [
        'description' => 'Restart Apache2',
        'cmd' => 'systemctl restart apache2'
    ],
    'start_apache' => [
        'description' => 'Start Apache2',
        'cmd' => 'systemctl start apache2'
    ],
    'status_apache' => [
        'description' => 'Status Apache2',
        'cmd' => 'systemctl status apache2'
    ],
    ];

    // handle post
    if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $error = [];
    $result = '';

    // validate input
    if (empty($_POST['service'])) {
        $error = [
            'service' => 'Service type required!'    
        ];
    } elseif (!array_key_exists($_POST['service'], $commands)) {
        $error = [
            'service' => 'Invalid Service!'    
        ];
    }
    }
    ?>
    <form action="" method="post">
    <?php if (!empty($error)): ?>
    <h3>Error</h3>
    <pre><?= print_r($error, true) ?></pre>
    <?php endif ?>
    <?php foreach ($commands as $key => $command): ?>
    <button type="submit" name="service" value="<?= $key ?>"><?= 
    $command['description'] ?></button>
    <?php endforeach ?>
    </form>
   <?php if (!empty($result)): ?>
   <pre><?= print_r($result, true) ?></pre>
   <?php endif ?>

错误

您很可能会遇到权限问题，因为web服务器用户

www-data

将无权重新启动服务

所以除非你允许，否则它不会起作用。这是因为您使用root用户通过SSH登录

好的，如果您确实添加了allow

www-data

来重新启动服务，那么您的代码如下所示。通过使用来执行cmd

错误

您会注意到它将失败，因为

无法重新启动服务！状态代码：1

-因为

www-data

没有权限。您应该阅读如何解决这个问题，同时也要注意，它可能会导致错误代码不断地重新启动apache并停止运行

就个人而言，我不会像您希望的那样直接执行，而是设置一个由root用户运行的任务，然后将操作（重启、停止等）放入队列中运行

---

希望有帮助。

“不起作用”太笼统了-请描述确切的问题/错误。为什么要执行php而不是简单的

systemctl start apache2

或任何其他命令？在

/var/log/apache2/error.log

@llyaBursov中也没有显示任何错误出于某种目的它的要求。我只能通过这种方式存档。我已经添加了，但不会工作，也不会停止服务。只需在输出中显示以下内容：`Array（[description]=>Stop Apache2[cmd]=>systemctl Stop Apache2）`您可以调用函数shell_exec（command）。()

// handle post
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
$error = [];
$result = '';

// validate input
if (empty($_POST['service'])) {
    $error = [
        'service' => 'Service type required!'    
    ];
} elseif (!array_key_exists($_POST['service'], $commands)) {
    $error = [
        'service' => 'Invalid Service!'    
    ];
}
//you need add this line
else $result = $commands[$_POST['service']];
}

<?php
// define cmds
$commands = [
    'stop_apache' => [
        'description' => 'Stop Apache2',
        'cmd' => 'systemctl stop apache2'
    ],
    'restart_apache' => [
        'description' => 'Restart Apache2',
        'cmd' => 'systemctl restart apache2'
    ],
    'start_apache' => [
        'description' => 'Start Apache2',
        'cmd' => 'systemctl start apache2'
    ],
    'status_apache' => [
        'description' => 'Status Apache2',
        'cmd' => 'systemctl status apache2'
    ],
];

// handle post
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $error = [];
    $result = '';

    // validate input
    if (empty($_POST['service'])) {
        $error = [
            'service' => 'Service type required!'    
        ];
    } elseif (!array_key_exists($_POST['service'], $commands)) {
        $error = [
            'service' => 'Invalid Service!'    
        ];
    }

    if (empty($error)) {
        exec($commands[$_POST['service']]['cmd'], $output, $status_code);
        if ($status_code === 0) {
            $result = 'Service restarted';
        } else {
            $error = 'Could not restart service! Status code: '.$status_code;
        }
    }
}
?>
<form action="" method="post">
    <?php if (!empty($error)): ?>
    <h3>Error</h3>
    <pre><?= print_r($error, true) ?></pre>
    <?php endif ?>
    <?php foreach ($commands as $key => $command): ?>
    <button type="submit" name="service" value="<?= $key ?>"><?= $command['description'] ?></button>
    <?php endforeach ?>
</form>

<?php if (!empty($result)): ?>
<pre><?= print_r($result, true) ?></pre>
<?php endif ?>
</form>