What are common issues when using is_dir() and is_file() functions in PHP for filesystem operations?

Common issues when using is_dir() and is_file() functions in PHP for filesystem operations include not providing the correct path to the function, leading to incorrect results. To solve this issue, ensure that the path provided to the functions is accurate and properly formatted.

$directory_path = '/path/to/directory';

if (is_dir($directory_path)) {
    echo "The path is a directory.";
} else {
    echo "The path is not a directory.";
}

$file_path = '/path/to/file.txt';

if (is_file($file_path)) {
    echo "The path is a file.";
} else {
    echo "The path is not a file.";
}