怎样上传文件并存入数据库，给个例子

if ($add){<br>
if ($picture!=&quot;none&quot;){<br>
$pic_data = addslashes(fread($fp=fopen($picture,&quot;r&quot;), filesize($picture)));<br>
$i_str=&quot;insert into picture (picture,picture_type) values ('$pic_data','$picture_type')&quot;;<br>
$result=mysql_query($i_str,$dbconnect);<br>
$picture_id=mysql_insert_id();<br>
fclose($fp);<br>
unlink($picture);<br>
}<br>
else{<br>
$picture_id=0 ;<br>
}<br>
$i_str=&quot;insert into index_news (news_date,news_title,news_content,news_link,picture_id,is_new,picture_side,news_show) values &quot;;<br>
$i_str.=&quot;('$date','$news_title','$news_content','$news_link','$picture_id','$is_new','$picture_side','$news_show') &quot;;<br>
if (mysql_query($i_str,$dbconnect)) echo &