How does variable declaration placement affect performance in PHP compared to other languages like C?

In PHP, variable declaration placement does not significantly affect performance compared to languages like C where variable declaration placement can impact performance due to memory allocation and access. However, it is still good practice to declare variables close to their usage to improve code readability and maintainability.

// Good practice: Declare variables close to their usage
$name = "John Doe";
$age = 30;

echo "Name: " . $name . ", Age: " . $age;