What are some potential issues with encoding and displaying special characters, such as Umlauts, in PHP when writing to a CSV file?

Special characters, such as Umlauts, can cause encoding issues when writing to a CSV file in PHP. To solve this problem, you can use the `utf8_encode()` function to convert the string to UTF-8 encoding before writing it to the CSV file. 

// Example code snippet to write special characters to a CSV file in PHP
$data = ["Möglichkeit", "überprüfen", "für"];
$file = fopen("output.csv", "w");

foreach ($data as $row) {
    fputcsv($file, [utf8_encode($row)]);
}

fclose($file);

Keywords

UTF-8 character encoding fputcsv htmlspecialchars multibyte strings

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