What are the potential pitfalls of using chdir() in PHP to change directories, especially when trying to access files on a remote server?

When using chdir() in PHP to change directories, especially when trying to access files on a remote server, potential pitfalls include security vulnerabilities and unexpected behavior due to the server's file system structure. To avoid these issues, it is recommended to use absolute paths instead of relative paths when changing directories.

// Example of using absolute paths with chdir() to avoid pitfalls when accessing files on a remote server
$remote_directory = '/path/to/remote/directory';
if (chdir($remote_directory)) {
    // Code to access files in the remote directory
    echo "Successfully changed to remote directory";
} else {
    echo "Failed to change to remote directory";
}