php发送邮件怎样才能修改发件人名称请老师指教

我将 $this-username = substr( $from, 0, strpos( $from , "@" ) ); 改成$this-username = "新订单"; 测试，出错： Deprecated : Function set_socket_blocking() is deprecated in E:\www\email\sendEmail.class.php on line 27 错误信息5:535 Error: auth

我将   $this->username = substr( $from, 0, strpos( $from , "@" ) );

改成 $this->username = "新订单";

 

测试，出错：

Deprecated: Function set_socket_blocking() is deprecated in E:\www\email\sendEmail.class.php on line 27
错误信息5:535 Error: authentication failed 63