What best practices should be followed when implementing language selection functionality in PHP scripts to ensure maintainability and scalability?

When implementing language selection functionality in PHP scripts, it is important to follow best practices to ensure maintainability and scalability. One approach is to use language files that contain all the translated strings for each language. This allows for easy maintenance and updates of language content without modifying the code. Additionally, using a function to retrieve the translated string based on the selected language can help keep the code clean and organized. 

// Function to retrieve translated string based on selected language
function translate($key, $language) {
    $translations = [
        'en' => [
            'hello' => 'Hello',
            'goodbye' => 'Goodbye'
        ],
        'fr' => [
            'hello' => 'Bonjour',
            'goodbye' => 'Au revoir'
        ]
    ];

    return $translations[$language][$key] ?? $key;
}

// Example usage
$selectedLanguage = 'en';
echo translate('hello', $selectedLanguage); // Output: Hello

Keywords

internationalization localization gettext language detection translation

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