What steps can be taken to troubleshoot and resolve PHP mail charset issues across various platforms?

When sending emails using PHP mail function, charset issues may arise across different platforms, causing text encoding problems. To troubleshoot and resolve this, ensure that the charset is properly set in the email headers using the "Content-Type" header. You can specify the charset as UTF-8 to ensure proper encoding and display of special characters. 

// Set the charset for the email content
$charset = 'UTF-8';

// Set the email headers with the charset
$headers = 'MIME-Version: 1.0' . "\r\n";
$headers .= 'Content-type: text/html; charset=' . $charset . "\r\n";

// Send the email with the specified charset
mail($to, $subject, $message, $headers);

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PHP mail charset troubleshooting resolve platforms

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