Check whether the username and password settings in the FTP connection are effective

When using PHP for FTP connection, we can create a context with FTP connection settings via stream_context_create() . At this point, if you want to confirm that the username and password are successfully applied to the FTP connection, you can view the set FTP options through stream_context_get_options() .

In this article, we will show how to use PHP's stream_context_get_options function to check whether the username and password set in the FTP connection are effective.

1. Create an FTP connection context

First, we need to create a context with FTP settings through the stream_context_create() function. The context may include the address, port, username, password and other information of the FTP server.

Here is a simple example:

 <?php
// FTPServer address
$ftp_server = 'ftp.m66.net';

// FTPUsername and password
$ftp_user = 'my_username';
$ftp_pass = 'my_password';

// createFTPConnect the context
$options = [
    'ftp' => [
        'auth' => 'ssl',  // Optional：useSSLconnect
        'user' => $ftp_user,
        'password' => $ftp_pass
    ]
];

$context = stream_context_create($options);
?>

In the above code, we create a FTP connection context, including information such as user name ( user ) and password ( password ).

2. Use stream_context_get_options to view settings

The stream_context_get_options() function can be used to get options for all settings in the context. When we pass in the created context, we can check whether settings such as username and password have been successfully applied.

 <?php
// Get options in the context
$options = stream_context_get_options($context);

// Output allFTPOptions
echo '<pre>';
print_r($options);
echo '</pre>';
?>

Here we use print_r() to print out all FTP options, including username and password. Through the output results, you can confirm that the correct username and password are set.

3. Analyze the output results

After executing the above code, you will get the output in the following format (assuming the output content is as follows):

 Array
(
    [ftp] => Array
        (
            [auth] => ssl
            [user] => my_username
            [password] => my_password
        )
)

From the output, you can clearly see whether the user and password are set correctly. If the user and password values ​​are the username and password you expect, they are already in effect.

4. Complete code example

Here is a complete PHP code example showing how to create an FTP connection context and check the username and password settings in the FTP connection: