In the provided PHP code snippet, what potential errors or pitfalls can be identified in the logic flow and variable handling?

The potential issue in the provided PHP code snippet is that the variable `$name` is being used without being properly initialized. This can lead to errors or unexpected behavior in the code. To solve this issue, it is important to initialize the `$name` variable before using it in the `if` condition.

// Potential issue: $name variable is being used without initialization
$name = $_POST['name'] ?? ''; // Initialize $name variable with default value

if ($name != '') {
    echo "Hello, $name!";
} else {
    echo "Please enter your name.";
}