What are some potential pitfalls of mixing German and English in PHP code, and how can this be avoided?

Mixing German and English in PHP code can lead to confusion for developers who may not understand both languages. To avoid this, it is recommended to stick to one language for consistency and clarity in the codebase.

// Bad example mixing German and English
$benutzername = "JohnDoe";
echo "Willkommen, $benutzername!";

// Good example sticking to one language (English)
$username = "JohnDoe";
echo "Welcome, $username!";