php開發中sql語句拼接示例（插入、查詢、更新）

1.插入語句

$sql= "insert into Ad(AdClassID,AdType,AdTit,AdFileName,AdUrl,AShow,Addtime) values('" .$AdClassID. "','" .$AdType. "','" .$AdTit. "','" .$AdFileName. "','" .$AdUrl. "','1','" .$Addtime. "')" ;

 

 2.從數據庫中選出數據

$sql = "select * from AdClass order by ID desc" ;<br><br>$sql= "select * from admin where AdminID='" .$_SESSION['AdminID ']."' ";

$fids = str_replace("|",",",$_POST['fileid2']);//$_POST['fileid2'] == "2246|2247|2248"
                    $sql2 = "select save_name from xxf_witkey_file where file_id in(".$fids.")";
                    $b = db_factory::query($sql2);//save_name二維集合數組

 

3,批量刪除

// 1，根據checkbox過來的一維數組， 轉成字符串；2、因為是order_id，所有在in 里面使用整型
is_array ( $ckb ) and $ids = implode ( ',',  $ckb );
$order_status = 'close';

$res = db_factory::execute("delete from xxf_witkey_home_order where order_id in (".$ids.") and order_status = '".$order_status."'");

 

4.更新數據庫中記錄數據

$sql= "update Ad set AdClassID='" .$AdClassID. "',AdType='" .$AdType. "',AdTit='" .$AdTit. "',AdFileName='" .$AdFileName. "',AdUrl='" .$AdUrl. "',Addtime='" .$Addtime. "' where ID=" .$ID. "" ;

 

$SQl = "update xxf_witkey_activity set subhead='".$subhead."' where a_id=".$a_id.""; 

 

 

 

5、進行模糊like查詢：

$sql = "select * from xxf_witkey_article where cat_type ='article'  and is_recommend =1 and art_title like '%".$key_word."%' order by art_id desc ";