Are there any potential pitfalls in using curly braces to access elements of a string in PHP?

Using curly braces to access elements of a string in PHP can lead to confusion and potential errors, especially when dealing with complex expressions or nested variables. It is generally recommended to use square brackets for accessing elements of a string to avoid any ambiguity or unexpected behavior.

// Using square brackets to access elements of a string
$string = "Hello, World!";
echo $string[0]; // Output: H