PHPMailer\PHPMailer

PHPMailer::setFrom │ public │ WP 1.0

Set the From and FromName properties.

Method of the class: PHPMailer{}

No Hooks.

Returns

true|false.

Usage

$PHPMailer = new PHPMailer();
$PHPMailer->setFrom( $address, $name, $auto );
$address(string) (required)
.
$name(string)
.
Default: ''
$auto(true|false)
Whether to also set the Sender address, defaults to true.
Default: true

PHPMailer::setFrom() code WP 7.0

wp-includes/PHPMailer/PHPMailer.php 
public function setFrom($address, $name = '', $auto = true)
{
    if (is_null($name)) {
        //Helps avoid a deprecation warning in the preg_replace() below
        $name = '';
    }
    $address = trim((string)$address);
    $name = trim(preg_replace('/[\r\n]+/', '', $name)); //Strip breaks and trim
    //Don't validate now addresses with IDN. Will be done in send().
    $pos = strrpos($address, '@');
    if (
        (false === $pos)
        || ((!$this->has8bitChars(substr($address, ++$pos)) || !static::idnSupported())
        && !static::validateAddress($address))
    ) {
        $error_message = sprintf(
            '%s (From): %s',
            self::lang('invalid_address'),
            $address
        );
        $this->setError($error_message);
        $this->edebug($error_message);
        if ($this->exceptions) {
            throw new Exception($error_message);
        }

        return false;
    }
    $this->From = $address;
    $this->FromName = $name;
    if ($auto && empty($this->Sender)) {
        $this->Sender = $address;
    }

    return true;
}