How can PHP be used to handle special characters in email content effectively?

Special characters in email content can be handled effectively in PHP by using the `mb_encode_mimeheader()` function to encode the subject line and headers of the email. This function will properly encode any special characters, ensuring they are displayed correctly in the recipient's email client. 

$subject = "Subject with special characters áéíóú";
$subject_encoded = mb_encode_mimeheader($subject, 'UTF-8');

$headers = "From: sender@example.com\r\n";
$headers .= "Content-Type: text/plain; charset=UTF-8\r\n";

$body = "Email content with special characters áéíóú";

mail('recipient@example.com', $subject_encoded, $body, $headers);

Keywords

PHP special characters email content encoding htmlspecialchars

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