php下利用pop命令取邮件

<?php   
//$socketconn=@fsockopen('pop.sina.com','110');   
$socketconn=@fsockopen('pop.tom.com','110');   
if($socketconn){   
        $line=fgets($socketconn,1024);   
        echo $line;   
  
        $command='USER abintest@tom.com'."\r\n";   
        echo '<br/>'.$command.'<br/>';   
        fputs($socketconn,$command);   
        $line=fgets($socketconn,1024);   
        echo $line;   
  
        $command='PASS 密码'."\r\n";   
        echo '<br/>'.$command.'<br/>';   
        fputs($socketconn,$command);   
        $line=fgets($socketconn,1024);   
        echo $line;   
  
        $command='LIST'."\r\n";   
        echo '<br/>'.$command.'<br/>';   
        fputs($socketconn,$command);   
        $line=fgets($socketconn,1024);   
        echo $line;   
  
        while($templine=fgets($socketconn)){   
              if(substr($templine,-3)==".\r\n") break;   
              echo $templine;   
        }   
           
        $command='TOP 1 0'."\r\n";   
        echo '<br/>'.$command.'<br/>';   
        fputs($socketconn,$command);   
        $line=fgets($socketconn,1024);   
        echo $line;   
  
           
        while($templine=fgets($socketconn)){   
              if(substr($templine,-3)==".\r\n") break;   
              echo $templine;   
        }   
        $command='RETR 1'."\r\n";   
        echo '<br/>'.$command.'<br/>';   
        fputs($socketconn,$command);   
        $line=fgets($socketconn,1024);   
        echo $line;   
        while($templine=fgets($socketconn)){   
              if(substr($templine,-3)==".\r\n") break;   
              echo $templine;   
        }   
        echo '<hr/>';   
  
        $command='RETR 2'."\r\n";   
        echo '<br/>'.$command.'<br/>';   
        fputs($socketconn,$command);   
        //$line=fgets($socketconn,1024);   
        //echo $line;   
        while(1){   
            $contentstring=fgets($socketconn);   
            if(!$contentstring) break;   
            if(substr($contentstring,-3)==".\r\n") break;   
            echo $contentstring;   
        }   
}else echo 'error';   
?>  

利用socket~