Are there any best practices for defining and using variables in PHP scripts to avoid conflicts?

To avoid variable conflicts in PHP scripts, it is best practice to use descriptive variable names that are unique to the specific scope in which they are used. Additionally, it is recommended to use variable naming conventions such as camelCase or snake_case to improve readability and reduce the likelihood of naming collisions. Finally, consider using namespaces or classes to encapsulate variables and prevent them from conflicting with variables in other parts of the script.

// Example of using namespaces to avoid variable conflicts
namespace MyNamespace;

$myVariable = "Hello";

function myFunction() {
    $myFunctionVariable = "World";
    
    echo $myVariable . " " . $myFunctionVariable;
}

myFunction(); // Output: Hello World