What are some best practices for naming variables in PHP to avoid conflicts with reserved keywords like $_POST?

When naming variables in PHP, it's important to avoid using reserved keywords like $_POST to prevent conflicts and potential issues with the superglobal arrays. One common practice is to prefix variables with a unique identifier or namespace to differentiate them from reserved keywords. For example, you can prefix variables with "my_" to make them unique and avoid conflicts with reserved keywords like $_POST.

// Example of naming variables to avoid conflicts with reserved keywords like $_POST
$my_variable = "Hello, World!";
echo $my_variable;