php中向mysql插入数据

1 $sql='insert into news(title,subtitle,source,publishtime,content,image,author) values("'.unicode_decode(strval($newsTitle),"utf-8").'","","'.unicode_decode(strval($newsSource),"utf-8").'","2012-12-12 10:10","","","")';

2 

3  

4 if($conn->multi_query($sql)){

5    echo "success";

6   }else{

7    echo "insert failure";

8   }