How to prototype a multilingual website using PHP

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To prototype a multilingual PHP website, start by defining a language selection mechanism, typically using a URL parameter like ?lang=en accessed via $_GET['lang'] or session variables. Next, implement a system for storing translation data; for prototyping, simple PHP arrays or JSON files (e.g., lang/en.json, lang/fr.json) are efficient. Create a centralized translation function (e.g., _t($key)) that loads the appropriate language file based on the selected locale and fetches the string associated with the given key. Inside your HTML templates, replace static text with calls to this function, like echo _t('welcome_message'). Consider adding a fallback mechanism to a default language (e.g., English) if a translation key is missing for the current locale to prevent empty strings. This approach allows for rapid content switching and demonstrates the core multilingual functionality without complex database setups, making it ideal for early-stage prototyping.