Php batch delete data

Php batch deletion of data batch deletion of articles is not profound. I just want to write it down and share it with you. (Suitable for beginners :)
1. on the article list page (list. php), name the multiple baskets "$ del_id []" and set the value to the article ID.
For example (list. php ):

2. processing page (del. php ):
If ($ del_id! = ""){
$ Del_num = count ($ del_id );
For ($ I = 0; $ I <$ del_num; $ I ++ ){
Mysql_query ("Delete from news where id = '$ del_id [$ I]'");
}
Echo ("