5.x PHPMailer.php

public PHPMailer::punyencodeAddress($address)

Converts IDN in given email address to its ASCII form, also known as punycode, if possible. Important: Address must be passed in same encoding as currently set in PHPMailer::$CharSet. This function silently returns unmodified address if:

• No conversion is necessary (i.e. domain name is not an IDN, or is already in ASCII form)
• Conversion to punycode is impossible (e.g. required PHP functions are not available) or fails for any reason (e.g. domain contains characters not allowed in an IDN).

Parameters

string $address The email address to convert:

Return value

string The encoded address in ASCII form

See also

PHPMailer::$CharSet

File

inc/PHPMailer/src/PHPMailer.php, line 1336

Class

PHPMailer

PHPMailer - PHP email creation and transport class.

Namespace

PHPMailer\PHPMailer

Code

public function punyencodeAddress($address) 
 {
  // Verify we have required functions, CharSet, and at-sign.
  $pos = strrpos($address, '@');
  if (static::idnSupported() and 
    !empty($this->CharSet) and 
    false !== $pos
    ) {
    $domain = substr($address, ++$pos);
    // Verify CharSet string is a valid one, and domain properly encoded in this CharSet.
    if ($this->has8bitChars($domain) and @mb_check_encoding($domain, $this->CharSet)) {
      $domain = mb_convert_encoding($domain, 'UTF-8', $this->CharSet);
      //Ignore IDE complaints about this line - method signature changed in PHP 5.4
      $errorcode = 0;
      $punycode = idn_to_ascii($domain, $errorcode, INTL_IDNA_VARIANT_UTS46);
      if (false !== $punycode) {
        return substr($address, 0, $pos) . $punycode;
      }
    }
  }

  return $address;
}