How can the use of FTP in Binary mode versus Text mode affect the integrity of PHP code files?

When transferring PHP code files using FTP, using Binary mode ensures that the files are transferred as is without any modifications, preserving the integrity of the code. On the other hand, using Text mode can introduce unwanted line ending conversions which may corrupt the PHP code files. To ensure the integrity of PHP code files during FTP transfer, always use Binary mode. 

// Example PHP code snippet to transfer files using FTP in Binary mode
$ftp_server = "ftp.example.com";
$ftp_user = "username";
$ftp_pass = "password";

$conn_id = ftp_connect($ftp_server);
$login_result = ftp_login($conn_id, $ftp_user, $ftp_pass);

if ($login_result) {
    ftp_pasv($conn_id, true); // Enable passive mode
    ftp_set_option($conn_id, FTP_BINARY, true); // Set transfer mode to Binary

    // Transfer PHP code file
    $local_file = "localfile.php";
    $remote_file = "remotefile.php";
    if (ftp_put($conn_id, $remote_file, $local_file, FTP_BINARY)) {
        echo "File transferred successfully in Binary mode.";
    } else {
        echo "Error transferring file.";
    }

    ftp_close($conn_id);
} else {
    echo "FTP login failed.";
}

Keywords

FTP Binary mode Text mode Integrity PHP code files

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