wp-includes/PHPMailer/PHPMailer.php:2660Format an address for use in a message header.
$addrarraystring public function addrFormat($addr) { if (!isset($addr[1]) || ($addr[1] === '')) { //No name provided return $this->secureHeader($addr[0]); } return $this->encodeHeader($this->secureHeader($addr[1]), 'phrase') . ' <' . $this->secureHeader($addr[0]) . '>'; }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/PHPMailer/PHPMailer.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.