php发送邮件怎样才能自定义发件人名称请老师指教,该怎么解决

php发送邮件怎样才能自定义发件人名称请老师指教
请老师指教在那添加代码自定义发件人名称

例如

require '../mail_config.php';
require 'axphp_email.php';
$title=$_POST['title'];
$content=$_POST['content'];
$senddoemain=$_POST['senddoemain'];
$smtpserver = $axphp['server'];
$smtpserverport =$axphp['port'];
$smtpusermail = $axphp['email'];


$smtpuser = $axphp['mailuser'];

$smtppass = $axphp['mailpass'];


$mailsubject = $title;
$mailbody = $content;
$mailtype = "HTML";
$sb=0;
$sendarray=explode(",",$senddoemain);
$emailnum=count($sendarray);
foreach($sendarray as $emaildododo)
{
$smtpemailto = $emaildododo;
$smtp = new smtp($smtpserver,$smtpserverport,true,$smtpuser,$smtppass);
$smtp->debug = false;
$smtp->sendmail($smtpemailto,$smtpusermail,$mailsubject,$mailbody,$mailtype);
}
;echo '
';?>

------解决方案--------------------
想了想，有了fromemail肯定有From头，你看这个sendmail函数，里面有没有设置请求头的。
From头要弄成

PHP code

From : 发件人姓名 <div class="clear"></div>

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