phpmailerで複数アドレス(配列)にBCCで送信

複数アドレス($addressの配列)をforeach の$mail->addBCC($value);で回せばOKですね。
$mail->addAddress(”);、$mail->addCC(”);は使わなければ、コメントアウトします。

use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;

require 'vendor/autoload.php';

$address = array('target1@gmail.com','target2@hotmail.com','target3@yahoo.co.jp');

$mail = new PHPMailer(true);
try{
	$mail->SMTPDebug = 2;
	$mail->isSMTP();
	$mail->Host = 'smtp.gmail.com';
	$mail->SMTPAuth = true;
	$mail->Username = 'fromhoge@gmail.com';
	$mail->Password = 'app pass';
	$mail->SMTPSecure = 'tls';
	$mail->Port = 587;

	$mail->setFrom('fromhoge@gmail.com');
	// $mail->addAddress('');
	// $mail->addCC('');
	foreach($address as $value){
		$mail->addBCC($value);
	}
	
	$mail->addAttachment('test.gif');

	$mail->isHTML(true);
	$mail->Subject = 'Here we comes!';
	$mail->Body = 'This is the HTML message body <b>in bold</b>';
	$mail->AltBody = 'This is the body in plain text for non-HTML';

	$mail->send();
	echo 'messeage has been sent';
} catch (Exception $e){
	echo "Message could not be send, Mailer Error:", $mail->ErrorInfo;
}

BCCで問題なく届いてます。これは想像以上だな～