What is the significance of using UTF-8 encoding for JSON files in PHP?

When working with JSON files in PHP, it is important to use UTF-8 encoding to ensure proper handling of special characters and multibyte characters. This is crucial for internationalization and to prevent encoding issues when reading or writing JSON data. 

// Set UTF-8 encoding for JSON files in PHP
header('Content-Type: application/json; charset=utf-8');

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UTF-8 encoding JSON files PHP significance encoding

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