What are common pitfalls to avoid when working with language files in PHP?

One common pitfall to avoid when working with language files in PHP is not properly handling encoding issues. To ensure that special characters and language-specific characters are displayed correctly, it is important to use the correct encoding when reading and writing to language files. One way to solve this issue is to always use UTF-8 encoding for your language files.

// Set the encoding to UTF-8 when reading language files
$languageFile = file_get_contents('language_file.txt', FILE_USE_INCLUDE_PATH, null, null, 'UTF-8');

// Set the encoding to UTF-8 when writing to language files
file_put_contents('language_file.txt', $content, LOCK_EX, null, 'UTF-8');