How can PHP developers ensure that their scripts properly handle UTF-8 encoding for Japanese text input and output, especially when dealing with form submissions and file saving operations?

PHP developers can ensure that their scripts properly handle UTF-8 encoding for Japanese text input and output by setting the appropriate character encoding in both the HTML form and PHP script, using mb_internal_encoding('UTF-8') to handle multibyte characters, and using mb_convert_encoding() when saving or outputting text to ensure it is correctly encoded. 

// Set the character encoding for the HTML form
<meta charset="UTF-8">

// Set the character encoding for PHP script
mb_internal_encoding('UTF-8');

// Handle form submission
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $japaneseText = $_POST['japanese_text'];
    $japaneseText = mb_convert_encoding($japaneseText, 'UTF-8');
    
    // Save the Japanese text to a file
    file_put_contents('japanese_text.txt', $japaneseText);
    
    // Output the Japanese text
    echo $japaneseText;
}

Keywords

UTF-8 Japanese text form submissions file saving encoding

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