在 phpstorm 中提示：@property-read

1、在 phpstorm 中提示：@property-read 。如图1

图1

$setting = ConventionEmailSetting::findSettingByConventionId($params['convention_id']);
if($setting && $setting->enable_custom_server == ConventionEmailSetting::ENABLE_CUSTOM_SERVER_YES){
	Yii::$app->mailer->transport = [
		'class' => 'Swift_SmtpTransport',
		'host' => $setting->host,
		'username' => $setting->username,
		'password' => $setting->password,
		'port' => $setting->port ?: '25',
		'encryption' => $setting->encryption ?: 'tls',
	];
}

2、在 common/config/main-local.php 中

<?php

return [
    'components' => [
        'mailer' => [
            'class' => 'yii\swiftmailer\Mailer',
            'viewPath' => '@common/mail',
            // send all mails to a file by default. You have to set
            // 'useFileTransport' to false and configure a transport
            // for the mailer to send real emails.
            'useFileTransport' => false,
            'transport' => [
                'class' => 'Swift_SmtpTransport',
                'host' => 'smtpdm.aliyun.com',
                'username' => '',
                'password' => '',
                'port' => '25',
                'encryption' => 'tls',
            ]
        ],
    ],
];

3、在 Yii2 中，yii\swiftmailer\Mailer 组件中对 transport 并不是通过公开属性设置的，而是通过 setTransport() 方法设置的。而 Yii::$app->mailer->transport = […] 属于 直接设置属性方式，PHPStorm 无法静态分析出你其实是通过 magic setter 间接调用了 setter 方法。这就是它提示 @property-read $transport 的原因。调整如下，不再报错。如图2

图2

Yii::$app->mailer->setTransport([
	'class' => 'Swift_SmtpTransport',
	'host' => $setting->host,
	'username' => $setting->username,
	'password' => $setting->password,
	'port' => $setting->port ?: '25',
	'encryption' => $setting->encryption ?: 'tls',
]);