In the provided script snippets, what potential pitfalls can be identified in the way variables are assigned and used?

The potential pitfalls in the provided script snippets include using inconsistent variable naming conventions and not properly initializing variables before using them. To solve this issue, it is important to establish a consistent naming convention for variables and always initialize variables before using them to avoid errors.

// Inconsistent variable naming convention and uninitialized variable
$my_variable = "Hello World";
echo $My_Variable; // This will not output anything due to the case-sensitive nature of PHP

// Fix: Use a consistent naming convention and initialize variables before using them
$myVariable = "Hello World";
echo $myVariable;