ftp_ssl_connect() function in PHP

The ftp_ssl_connect() function opens a secure SSL-FTP connection to an FTP server. This function provides encrypted communication, making it more secure than the standard ftp_connect() function.

Syntax

ftp_ssl_connect(host, port, timeout);

Parameters

• host − The FTP server address. Can be a domain name or an IP address.

• port − Optional. The port to connect to. Default is 21.

• timeout − Optional. The timeout in seconds for network operations. Default is 90 seconds.

Return Value

The ftp_ssl_connect() function returns an SSL-FTP connection resource on success, or FALSE on failure.

Example

Here's how to establish a secure FTP connection and perform basic operations ?

<?php
    $ftp_server = "ftp.example.com";
    $ftp_user = "username";
    $ftp_pass = "password";
    
    // Establish SSL connection
    $ftp_conn = ftp_ssl_connect($ftp_server) or die("Could not connect to $ftp_server");
    
    // Login to FTP server
    $login = ftp_login($ftp_conn, $ftp_user, $ftp_pass);
    
    if ($login) {
        echo "SSL FTP connection successful!";
        
        // Set passive mode for better compatibility
        ftp_pasv($ftp_conn, true);
        
        // Get current directory
        $current_dir = ftp_pwd($ftp_conn);
        echo "Current directory: " . $current_dir;
    } else {
        echo "Login failed!";
    }
    
    // Close SSL connection
    ftp_close($ftp_conn);
?>

Key Points

• Requires OpenSSL support to be enabled in PHP

• More secure than regular FTP as data is encrypted

• Default port 990 is commonly used for FTPS (explicit SSL)

• Always use ftp_close() to properly close the connection

Conclusion

The ftp_ssl_connect() function provides secure FTP connectivity with SSL encryption. Always verify SSL support is enabled and use proper error handling when establishing connections.